Malicious PDF — malware analysis report

Static analysis result for SHA-256 3209d8e2f5705e87…

MALICIOUS

PDF

38.2 KB Created: 2020-08-07 12:45:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 523d0591a24d499b4c4a6520ee80e2eb SHA-1: 6c8c7d6b2a51423bbb3a03c8e12466d1205b9083 SHA-256: 3209d8e2f5705e87e56e461086982ef324ab5eb079f9d9cb2999cbc2fd368777
194 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous external links. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=angiomas+cavernosos+cerebrales+pdf'. The document body, though heavily obfuscated, also contains this URL and other embedded URLs pointing to Shopify and various file-hosting domains, suggesting a coordinated effort to distribute malicious content. 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.cc/pify?keyword=angiomas+cavernosos+cerebrales+pdf In PDF document text
    • http://files.greencityappliancerepair.com/uploads/1/3/1/3/131381518/8365566.pdfIn PDF document text
    • http://files.jasonmarshallconsulting.com/uploads/1/3/0/7/130776255/1660888.pdfIn PDF document text
    • http://files.glaciercitygardener.com/uploads/1/3/1/0/131070362/nabutox.pdfIn PDF document text
    • http://files.australianwandarrah.com/uploads/1/3/1/4/131438059/xirubodobo.pdfIn PDF document text
    • http://sukulamu.kpugaming.com/uploads/1/3/0/8/130874304/wawamaser.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/1/0437/4138/0759/files/21169574904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0310/1863/files/vapubomusigijawazuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3486/1987/files/zedemenabelefumesoledasuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0381/3781/files/24884187843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1903/5033/files/classroom_mathematics_grade_12_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8447/1710/files/74136355269.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5736/5670/files/id_checking_guide_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0093/9164/files/xurekusudupedimuxutaseki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1791/0941/files/20412525706.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5815/0046/files/wuwobakuvowazabutokixeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9229/6358/files/campanella_ukulele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4645/2899/files/online_advertising_project.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_off0000538b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x538B 5664 bytes
SHA-256: 7367d3fc31450b57dd66d6249ff453ae16e9699f57a19c538876dd6bbee75f2f
font_01_sfnt_off000066c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66C5 10876 bytes
SHA-256: d68f90757ab7e1e5a390003cbc646bf94d0a2b3efde3edc215da3bca1c091e09

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