Malicious PDF — malware analysis report

Static analysis result for SHA-256 48a29d4abb814428…

MALICIOUS

PDF

68.7 KB Created: 2021-09-16 05:14:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: c1509af64b6c7acc2ffc1cb54235c68f SHA-1: 06e4529bf1f92905f5039ed9e3b808ce6838c77d SHA-256: 48a29d4abb814428cdd2476c182f2c0bd023c5b9a4c75fd3bc9eee13bf83a724
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF is identified as a phishing lure due to its image-heavy nature and embedded clickable links. It leverages compromised WordPress sites to host further malicious PDFs, indicating a multi-stage phishing campaign. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to deliver a payload or redirect to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 68 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://allytemp.ru/uplcv?utm_term=time+lapse+video+in+android PDF link annotation
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141a707540a2---lokamap.pdfIn PDF document text
    • http://yogathoitrang.com/quangbasanpham/app/webroot/upload/image/files/gixawemix.pdfIn PDF document text
    • https://movimientofamiliadejesus.com/images/uploaded/file/45573974020.pdfIn PDF document text
    • http://itcck.org/upload/editor/file/lefimosufusetusebipim.pdfIn PDF document text
    • http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1614286a60e051---63163569750.pdfIn PDF document text
    • http://abpjseah.news-read.com/upload/files/sigitikaxaxusekiwaxumew.pdfIn PDF document text
    • http://caramelitos.sk/files/67744256128.pdfIn PDF document text
    • http://mobil-tech.com/files/1998385786.pdfIn PDF document text
    • http://www.elstar.ru/uploads/files/ritofakosu.pdfIn PDF document text
    • http://aallergy.friend-match.com/upload/files/34335073715.pdfIn PDF document text
    • http://puzynowska-kancelaria.com/userfiles/file/samek.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613ff88c7bb2d---lukoribuzukesonerulid.pdfIn PDF document text
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/0132b3bc874e1a57db95fff8a9f60977/rokukofabudaru.pdfIn PDF document text
    • http://patronusalapitvany.hu/public_html/upload/72567176433.pdfIn PDF document text
    • http://31kouqiang.com/userfiles/file/1631590159.pdfIn PDF document text
    • https://konteshamamotu.com/userfiles/file/muwowumu.pdfIn PDF document text
    • http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/16130230f7f2c4---kunulezoxi.pdfIn PDF document text
    • https://majubesar.org/contents/files/rilaxob.pdfIn PDF document text
    • http://vip-cond.ru/userfiles/file/28967746325.pdfIn PDF document text
    • http://schturman.ru/files/files/89177481333.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/fee5fdd372749db25aa65aa33ab88f9e/nizuxokodipaxa.pdfIn PDF document text
    • http://singer-island-condos.com/userfiles/files/sujadazagukete.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ef9cde611d---ludidufipani.pdfIn PDF document text
    • https://zegaoyun.com/calisma2/files/uploads/babonegalogupar.pdfIn PDF document text
    • http://nhadatv.com/webroot/img/files/xexufukuredezez.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_off0000b2bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2BB 10484 bytes
SHA-256: cb8633f6acb471ced80cecbc52536f4006544458c9283d4faec0847ad915b471
font_01_sfnt_off0000ca7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA7D 14140 bytes
SHA-256: bd8edaa124a26da3712c60fab98de748003e25a406b1158ce4933b914f918bb0
font_02_sfnt_off0000ed6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED6A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.