Malicious PDF — malware analysis report

Static analysis result for SHA-256 908bd82641ff8a02…

MALICIOUS

PDF

43.4 KB Created: 2020-08-19 21:48:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 92ce05f10123d9c2b1a03db2c8e433ba SHA-1: 36bafe653e4044d7c3bd6c9f6264ab0010d463c7 SHA-256: 908bd82641ff8a02609254b8101563fc2d274b3ca74a961a5c36d5c318d398b2
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though obfuscated, contains text related to a 'Kellogg company annual report 2018', suggesting a lure. The PDF also contains a link farm, with many external PDF links, some of which point to potentially malicious domains.

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=kellogg+company+annual+report+2018 In PDF document text
    • http://ziwikosov.actingonfaith.org/uploads/1/3/2/6/132681482/bd032f030f.pdfIn PDF document text
    • http://files.aj-flower.com/uploads/1/3/0/9/130969481/4313506.pdfIn PDF document text
    • http://files.plpthumanresources.org/uploads/1/3/1/4/131407135/04d0a0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9562/9725/files/japev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1386/4604/files/squinty_eye_meme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8070/4405/files/84841074709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5912/5153/files/8047140408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27588499931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6481/1927/files/53324008443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8617/6665/files/writing_task_1_general_ielts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9912/7959/files/lopesulivekimifipota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1158/6722/files/40297627850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0323/9840/files/ranuvuvijerajamiwebaxewa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C33 5500 bytes
SHA-256: dbf18434b66398e743eee85e54120f17dd2058de07b42f6fc92d4a72ee54a43c
font_01_sfnt_off00006ee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE6 10552 bytes
SHA-256: f0b2f355fe72b9e33c2dfce778f378ebe5dd9fe514794f1a38102429771a479b
font_02_sfnt_off000092d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92D4 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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