Malicious PDF — malware analysis report

Static analysis result for SHA-256 3060db203993431f…

MALICIOUS

PDF

93.7 KB Created: 2021-02-13 11:43:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 649e72c48a3820d0ddb912d7220908af SHA-1: 8018087abba16002df4a59723f66e4a77f9133a4 SHA-256: 3060db203993431f7f7d53986886275b2d7fd35c2de4f41405f53a98e18a8d7d
164 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, identified as a PDF link farm, suggesting a phishing or SEO manipulation tactic. ClamAV detection and ML classification strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of numerous URLs and the PDF_SEO_LINK_FARM heuristic point towards a malicious document likely designed to redirect users to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://leonvi.ru/wix?keyword=paste+method+of+worksheet+class+failed+qlikview PDF link annotation
    • https://xisuludibu.weebly.com/uploads/1/3/5/3/135300694/4650160.pdfIn PDF document text
    • https://cdn.sqhk.co/vazedibimi/hd6ihXN/78878327771.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422631/normal_5fe05cd223fbb.pdfIn PDF document text
    • https://cdn.sqhk.co/jisepozidis/jgXgeii/car_driving_simulator_ny_mod_apk_unlimited_money.pdfIn PDF document text
    • https://titobabedax.weebly.com/uploads/1/3/4/3/134317276/mirasif.pdfIn PDF document text
    • http://joy-todays.online/wanojoz6vdeh.pdfIn PDF document text
    • https://cdn.sqhk.co/numavagoko/2igy5gj/15785321287.pdfIn PDF document text
    • https://xoregofejaba.weebly.com/uploads/1/3/4/6/134651656/00d90.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409623/normal_5ffa5b74c6f01.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474218/normal_5ffe77a3bc38b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389606/normal_5fcc83d42ed01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408352/normal_6021502b13c1a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410216/normal_5ff148587f9e1.pdfIn PDF document text
    • http://logusubunovad.22web.org/lonikuxojegorebuf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407756/normal_5fc65627cb914.pdfIn PDF document text
    • https://babotiditufo.weebly.com/uploads/1/3/4/6/134694550/2194530.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455208/normal_6015e4884dde5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wolekepivezune.rf.gd/bluetooth_software_for_acer_laptop.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001279f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1279F 5604 bytes
SHA-256: 78d47cd32287065c09949ee8ddb542ea9569e11d64188f789ca366b6694266b7
font_01_sfnt_off00013a91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A91 1800 bytes
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
font_02_sfnt_off0001431f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1431F 11028 bytes
SHA-256: f0751b16845b344554f39550ca91a88f4ae6e3ade4da181a6d244f082993c055

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