Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf23b4812d5a1eab…

MALICIOUS

PDF

44.3 KB Created: 2020-08-19 10:32:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0c3d6c1bf313deb686b07ca54d0ba488 SHA-1: 8b68f1b4c39334df08ad4121584caeab2c4d5505 SHA-256: bf23b4812d5a1eabdcd888f4a1e281c357385340702414a0ffd058af146dfb98
194 Risk Score

Malware Insights

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

The PDF document was flagged by a machine learning classifier and contains a link to a known malicious redirector, traff.cc. The document body suggests a lure for a 'desiring god study guide pdf', which is likely a pretext to trick users into clicking the malicious link. The PDF also contains a large number of external links, many pointing to Shopify domains, likely part of a link farm to improve search engine ranking for malicious 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.cc/pify?keyword=desiring+god+study+guide+pdf In PDF document text
    • http://files.hbint.org/uploads/1/3/0/8/130874207/1888930.pdfIn PDF document text
    • http://files.cyberspacedetectives.com/uploads/1/3/0/7/130738870/4029508.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/1/0429/4891/9450/files/54126129304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8950/2110/files/fekeke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/2788/2133/files/16182193376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/31456579170.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8838/0061/files/74988699711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9679/1456/files/callan_method_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/5621/2642/files/wezukitu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5804/4827/files/82278810790.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2040/9256/files/rezegipekamif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7567/4024/files/beer_and_johnston_mechanics_of_materials.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8461/9680/files/98831064669.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9429/5203/files/44835040229.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_off00007063.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7063 5068 bytes
SHA-256: f91cea92c8391cff8936c62b0bb3ee100720721325993d6db8157c59081636d2
font_01_sfnt_off000081bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81BB 10252 bytes
SHA-256: cd19c2f9129f28ef832b2806ae77a140940b664bcbb05fa6e8b0037b497f5b21

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