Malicious PDF — malware analysis report

Static analysis result for SHA-256 279eabc55fe5d8a0…

MALICIOUS

PDF

49.7 KB Created: 2020-07-27 12:21:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 22d2ba93341da7576945cae3f7ac8476 SHA-1: 443deee7931a3af3966562e5d421b20af0800a19 SHA-256: 279eabc55fe5d8a0456c5f4a259537e3a2bff099fe9cb0fac0cd52eacd61a658
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one URL pointing to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to a 'F factor diet book pdf'. The primary attack vector appears to be directing users to malicious infrastructure disguised as 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=f+factor+diet+book+pdf In PDF document text
    • http://files.bibslovelypam.com/uploads/1/3/2/6/132682819/mezubufosegumos.pdfIn PDF document text
    • http://files.heatherburnett.net/uploads/1/3/1/6/131637357/sobon-midizabamuf.pdfIn PDF document text
    • http://files.alexandriaprevents.com/uploads/1/3/0/8/130814101/momage-lojefezov.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/1/0433/7165/9414/files/33215787615.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2309/8279/files/solepixojenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6209/8085/files/45665724646.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7701/8524/files/23883028890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7152/0411/files/53862066293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3497/6157/files/sesabijekisi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5481/6665/files/70021935945.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6577/6030/files/22283928539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9105/8083/files/89217504437.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2258/0886/files/gogegizenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6239/4021/files/22177219645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3283/8298/files/sogoz.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 4

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_off0000876f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x876F 4780 bytes
SHA-256: c0e96f0e4842968292325edc4a0d7281783f4958cc00063758f41710ad94cf4f
font_01_sfnt_off000097bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97BC 9992 bytes
SHA-256: b58f129b59ae43c3a1a495b2e795a2dac5364cb69e13d636ff3d060e38863009

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