Malicious PDF — malware analysis report

Static analysis result for SHA-256 30dc2566ea4bc9be…

MALICIOUS

PDF

176.8 KB Created: 2021-07-03 16:52:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: e317a2437604668c5771937a3d89e5f4 SHA-1: 0ebb33ea0078ddd5d1fcae457ad9c8b1bde94e41 SHA-256: 30dc2566ea4bc9beab44bbd72bd25ac2422085589b7c1c78e6032477e2c1799b
216 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, specifically as a phishing or trojan delivery mechanism. The 'SE_SECRET_RECOVERY_LURE' heuristic indicates the document's content is designed to trick users into providing sensitive recovery information. The numerous embedded URLs, many pointing to compromised CMS uploads, suggest an attempt to host or distribute malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9904

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/160942b5d2f74a---koboleban.pdf In PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16085db60f0bad---78405474071.pdfIn PDF document text
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/6c2d611d544252f420354d8592148ce0/68138228752.pdfIn PDF document text
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/1609e6da565ab6---kuvukerabo.pdfIn PDF document text
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/16093b35083a6a---pepizug.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/908423f59821d302c9f44fced950a4bd/pubufidosepevupowiwutuwe.pdfIn PDF document text
    • http://ardechetendancebrut.fr/userfiles/ardechetendancebrut.fr/file/92724337576.pdfIn PDF document text
    • https://www.syah.org/wp-content/plugins/super-forms/uploads/php/files/bb0382a0d7ee8053d20bc68ea079129e/40574170414.pdfIn PDF document text
    • https://www.helmmsp.ca/wp-content/plugins/super-forms/uploads/php/files/31de83af46bddd681311089429eae22b/vuvosamidufaruwitosis.pdfIn PDF document text
    • http://dribblebar.pl/userfiles/file/litudapanogapunin.pdfIn PDF document text
    • http://bezpieczna-strefa.pl/wp-content/plugins/super-forms/uploads/php/files/14284e94bc53998e9e30a1e02617280e/tavimobadu.pdfIn PDF document text
    • http://prof-cosmetics.com/upload/files/gomesajojarinumiv.pdfIn PDF document text
    • http://stevis.cz/files/file/surexexipabaruloxizezik.pdfIn PDF document text
    • https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/8c76ae233dcded1552c9ad2e327634c7/puwev.pdfIn PDF document text
    • http://goldenpeak.it./userfiles/files/tajikekunogerazagexasa.pdfIn PDF document text
    • https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/afcb930ad6a3d635c6a60e172143391a/60366581988.pdfIn PDF document text
    • https://arerp.kr/data/file///15459546414.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c9bffb15595---paxakolukisumuz.pdfIn PDF document text
    • https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/de814a359f13733a07650c87526abe35/261316741.pdfIn PDF document text
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fb6e16941e---jimifitofarana.pdfIn PDF document text
    • http://donkaew-furniture.com/ckfinder/userfiles/files/ropopemurumebidugutuwe.pdfIn PDF document text
    • http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160723d63e0dc0---88973419088.pdfIn PDF document text
    • http://cutencuddlybreedables.com/_images/file/3760708486.pdfIn PDF document text
    • http://arniestribu.com/campannas/file/romikixaferuximosem.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=brad+pitt+in+once+upon+a+time+in+hollywoodPDF link annotation
    • https://mediaget.com/userfiles/files/roxudibivolin.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002527b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2527B 19408 bytes
SHA-256: 1f2038bfe5e1e5b5a35957cc525ababe188f1ef9236279359aece6934391482f
font_01_sfnt_off000283c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x283C4 10964 bytes
SHA-256: c7ce1db6d9135804e7ec5f06b27fcf5b529d1ba45df204173522e03860b20666
font_02_sfnt_off00029d14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29D14 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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