Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2bc1081392a0121…

MALICIOUS

PDF

38.6 KB Created: 2020-08-20 20:44:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7d2ca250f6cc7f831748109c3185d1b4 SHA-1: 949eb694406e29035bbaa4daae9daf996261344e SHA-256: f2bc1081392a0121e7db29e5c7baf99d5dafe81a5a9992a990f13464950cb855
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to external resources, indicating a link farm or redirection strategy. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Oecd transfer pricing guidelines 2015 pdf' and references the wkhtmltopdf tool, suggesting a lure to download or access malicious content disguised as a legitimate document. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ttraff.ru/pify?keyword=oecd+transfer+pricing+guidelines+2015+pdf In PDF document text
    • http://files.newsilkstrategies.com/uploads/1/3/1/4/131438708/dedukogagax.pdfIn PDF document text
    • http://files.cranewyork.com/uploads/1/3/0/7/130738960/nakivenajamoj_miwaxesimo_rirenebome_revofuvoful.pdfIn PDF document text
    • http://files.colegiocumbaya.org/uploads/1/3/1/4/131483492/323423.pdfIn PDF document text
    • http://files.maptecit.co.uk/uploads/1/3/0/7/130740184/vuboravevox-ladusikigunebaj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5592/2856/files/wefutifiwokepozomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9969/9866/files/dupusutataxifipalul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1385/7692/files/suporigasotabugoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4293/8784/files/tigovoxilejagesutojixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3191/0810/files/97805495871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0709/0581/files/2713418915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1804/4070/files/ketif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/34267482570.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

Related samples 6

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000584a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x584A 5800 bytes
SHA-256: fff661b882fb18339a5eb0e28b08103312ead1f8ad998c61f87234b79bf96bf4
font_01_sfnt_off00006c17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C17 9816 bytes
SHA-256: 85a4532c3d2ddd256852353638a1e5fea60b4d47c691063053c0f5c00edc025d

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