Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4a32081c86a084d…

MALICIOUS

PDF

41.3 KB Created: 2020-08-11 00:56:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: acec7f89bee6c28a30d9cff4c65f594c SHA-1: 5fe114a2e5b4f11a4b5a8a3dadfe0224b6fcc6cb SHA-256: b4a32081c86a084d0f6862c58e923ccb3d56eba1943f4300277a66649776ef1b
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources, a technique often used to obscure malicious destinations. One critical heuristic identified a link to a known malicious redirector, and another flagged the document as a link farm. The document body, though partially corrupted, contains text related to research and PDF, suggesting a lure to disguise the malicious links. The primary malicious URL identified is https://ttraff.cc/pify?keyword=importance+of+demographic+profile+in+research+pdf.

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=importance+of+demographic+profile+in+research+pdf In PDF document text
    • http://pabavo.ellijaymontessori.com/uploads/1/3/0/7/130775734/138087475c1fd6.pdfIn PDF document text
    • http://files.ernesthatton.com/uploads/1/3/1/4/131453414/f8e2329b13.pdfIn PDF document text
    • http://files.pof-addcallsettings.com/uploads/1/3/1/1/131164573/ninejerokog.pdfIn PDF document text
    • http://files.keepcalmandreadon.org/uploads/1/3/2/6/132683289/638d5e60.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/1/0438/2405/4429/files/xeremirudule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2739/0887/files/duzemafudularan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0120/8232/files/navodaya_online_application_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0760/5923/files/52287424516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5636/4709/files/the_black_cat_edgar_allan_poe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/fundamentals_of_chemical_reaction_engineering_solution_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5974/8769/files/abc_in_french.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1165/4307/files/53262378744.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9144/4390/files/92855262688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7825/4745/files/argala_stotram_in_gujarati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3269/9302/files/article_1_to_395_in_english_download.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
🗂 Part of campaign: oberlinsfc.com 5 samples

Related samples 5

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_off00006318.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6318 5504 bytes
SHA-256: b9bb4a66485a7c5ce39796ce876e6c3c1a26d55db40250160d5a87d4a4bb3291
font_01_sfnt_off00007595.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7595 10192 bytes
SHA-256: 6c3fe59ba359608e1ceaec2dc1bdf95521abf7f0b57bbe2666b396915d794fee

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