Malicious PDF — malware analysis report

Static analysis result for SHA-256 613a1029e431637b…

MALICIOUS

PDF

40.6 KB Created: 2020-08-04 22:40:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f01de083d6105ecdb32b7ed7c321f41c SHA-1: dd99058502d039cf9e4877d8c2813cda2632c9c6 SHA-256: 613a1029e431637b9e206f21bd10b0885e60966ade9619ed0686b5b9aa5d9e06
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary lure appears to be a fake download for 'Asciidoctor windows pdf', which redirects to a malicious URL. The ML classifier strongly indicates maliciousness, and the link farm suggests a phishing or scam attempt.

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=asciidoctor+windows+pdf In PDF document text
    • http://files.somdjuniorwrestlingleague.org/uploads/1/3/1/4/131408581/wetuxufi_ketogob.pdfIn PDF document text
    • http://files.shannondrhodes.com/uploads/1/3/0/8/130873907/1944747.pdfIn PDF document text
    • http://files.brittanyborman.org/uploads/1/3/0/7/130776370/9913297.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/1/0435/8845/2515/files/juwavafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6711/1584/files/82043227653.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1977/9741/files/craftsman_lt1000_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2969/0525/files/63410539263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1637/2892/files/wolejufizonokulid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3670/3900/files/how_to_search_through_imessage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4184/1575/files/bobujakazu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/fuwonidobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2742/3654/files/49016409316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5056/3734/files/13290992985.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0688/6051/files/75133555211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2541/3782/files/68144212312.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_off00006118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6118 4988 bytes
SHA-256: d04fe0917e76d56ed9416965c8e6f813473d52c062d3b351c0897ba9392d2400
font_01_sfnt_off00007238.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7238 10364 bytes
SHA-256: da0686a791c06b8a69047b9d1cec7b836f1863957d806cbb4e8105b0f77dbbb2

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