Malicious PDF — malware analysis report

Static analysis result for SHA-256 10c760e8a106eb9a…

MALICIOUS

PDF

40.3 KB Created: 2020-08-04 21:16:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 26d9171bd47589bcac496439cbf16e0e SHA-1: 78267d015ac6be351e896877802f192edc6f6b2a SHA-256: 10c760e8a106eb9a3fb4d2574f59939fae687d9edc365510c7490ed8a97d92ab
194 Risk Score

Malware Insights

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

This PDF document functions as a link farm, directing users to a redirector URL that likely serves malicious content. The document body and embedded URLs suggest a lure for downloading fake "free" books, a common tactic for distributing malware or phishing content. The ML classifier strongly indicates maliciousness, and the presence of numerous external links points to an attempt to obscure the ultimate destination.

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=electronics+projects+for+dummies+book+pdf In PDF document text
    • http://files.tucherrycrusade.com/uploads/1/3/2/6/132681891/6429110.pdfIn PDF document text
    • http://files.catchwalleyes.com/uploads/1/3/1/3/131398174/a9d17b1767743.pdfIn PDF document text
    • http://files.nosciastudios.com/uploads/1/3/1/0/131070294/9085130.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/1/0436/8600/2843/files/rigureruwejevet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1274/3591/files/xarakinom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8286/6083/files/50922864647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0467/3699/files/70993564446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1639/6697/files/zebavasupidapudekevuziviz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7388/8671/files/gilaxuvelazonawim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1819/7912/files/rutan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6658/8325/files/sonoxubudosoluzunav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78649322563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1770/7425/files/vefiripavelemogevowufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5906/1670/files/24161536869.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1080/8217/files/remor.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 2

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_off00005f79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F79 5328 bytes
SHA-256: 37d5ada176efd13cd6d1d843354697882726d927df321fdd06ce8a3d3766b870
font_01_sfnt_off0000718b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x718B 10208 bytes
SHA-256: 2fa17fcef000ea9bb2db67142bbae70a10596866a5e3e413091c8040ea13d7f9

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