Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d00ee15a3af689f…

MALICIOUS

PDF

87.3 KB Created: 2021-07-04 05:35:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-18
MD5: 9b0813d04c777d2b3f3ae722f0ea0d59 SHA-1: 37479bbf93fbdbcee8be64289d73b684a236e3bc SHA-256: 3d00ee15a3af689fd6e444fbff4700ba635b7e215b4143579711001ae178362d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to compromised WordPress upload storage, suggesting a phishing or redirection scheme. Although no scripts were extracted, the presence of numerous links to potentially compromised sites indicates an attempt to lure users to malicious destinations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/160992c06023c8---datefuvegogomegig.pdf In PDF document text
    • http://musorcentrum.hu/files/article/file/5988256943.pdfIn PDF document text
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cee4eb9a6d---figopevemi.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160a08e61c9d09---zagegosalifoputimegekigeb.pdfIn PDF document text
    • https://engravestone.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac94775adfb---48406756187.pdfIn PDF document text
    • http://profil-metall.de/content/uploads/file/25922507022.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16092f05cac6de---41835816498.pdfIn PDF document text
    • https://ready4use.ru/uploads/files/23379207184.pdfIn PDF document text
    • http://grapevinewinerytrail.com/clients/876125/File/zukudinewinotonumofavuwuv.pdfIn PDF document text
    • https://qian-ho.com/upfiles/editor/files/68968766521.pdfIn PDF document text
    • http://eko-inwest.eu/upload/file/zodufuguzo.pdfIn PDF document text
    • http://timapools.com/uploads/files/pojofifubozaxezo.pdfIn PDF document text
    • https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160892b65dddf1---54310390326.pdfIn PDF document text
    • http://songiadahoaian.com/upload/ck/files/67298564290.pdfIn PDF document text
    • https://webtechnocrats.com/upload/file/kekonowosotiniwu.pdfIn PDF document text
    • http://signexpowholesale.com/project-new/christianbook/upload_images/file/kuxiwevizitumejidof.pdfIn PDF document text
    • https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/160930b62d24d8---woguxavuzemaseguwakiwubut.pdfIn PDF document text
    • http://happinessgown.com/upload/users/files/bomuzivek.pdfIn PDF document text
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160700865dd8c8---81276252961.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ada1e467f50---84760357283.pdfIn PDF document text
    • https://nhachoxebus.com/upload/fck/file/gowodozu.pdfIn PDF document text
    • http://dmscsmartlifeblog.com/userfiles/files/51019041226.pdfIn PDF document text
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a96e91d4c3a---tegizujoworaroxeg.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=into+the+unknown+frozen+2+elsaPDF link annotation
    • 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f20d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF20D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010a24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A24 10628 bytes
SHA-256: c2c2fbcc48c3cbcdc01499c37c110ecc6a257035f2ddee87a7c6d6f9c353e24a
font_02_sfnt_off000122a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122A1 17504 bytes
SHA-256: 1e3c28f4e54e2ca4ce522caf60d176c5d950975c016e1f20a8dabb9c879acc2c

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