Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ecb5641c7600f9c…

MALICIOUS

PDF

33.6 KB Created: 2020-08-25 11:56:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bcf9c83f0d3aa5457860447a1c7ac588 SHA-1: ff366c7663c51c460cc7e2754009cb8d32fb2b8b SHA-256: 3ecb5641c7600f9c8de3fb63275ccbb014c493b027bc829bf85c98b19ce02a0e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic identified a link to a known malicious redirector at `https://ttraff.com/pify?keyword=video+avenged+sevenfold+dear+god+lirik`. The document body, though heavily obfuscated, also contains this URL and other links to external PDFs hosted on various domains, suggesting a link farm or redirection scheme designed to lead users to malicious content.

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.com/pify?keyword=video+avenged+sevenfold+dear+god+lirik In PDF document text
    • http://files.thirdcinemaproductions.com/uploads/1/3/1/3/131379749/sonazez.pdfIn PDF document text
    • http://files.tasteofpariscarryout.com/uploads/1/3/0/7/130775918/2067394b.pdfIn PDF document text
    • http://xunulifu.ellisbirdfarm.ca/uploads/1/3/0/7/130739664/nedowuj-motabigefuwone-fapaxeja-sidezabaj.pdfIn PDF document text
    • http://files.kbcfishing.com/uploads/1/3/1/6/131607110/9361482.pdfIn PDF document text
    • http://sezogizon.en.fteacadia.com/uploads/1/3/1/4/131454106/xopizijude.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/1/0438/5262/8118/files/rexoxomunokibuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7245/4807/files/sexazixejuwobadopinobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9900/4831/files/xikimezima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0319/7078/files/59696394975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4640/2208/files/speaking_criteria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6516/1366/files/66241808159.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3165/7638/files/laruruwoxopez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/48874493847.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 8

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_off000048c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48C2 5164 bytes
SHA-256: 2f8fbd11135866ce3ab1ea9edde3e0503202429d8a1ce716be29c0bfc062a727
font_01_sfnt_off00005a6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A6D 9152 bytes
SHA-256: e80189d48a2729b3e9cafed1f5a9f23f0902ca0a3e979f9cb8837e0edbe48f31

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