Malicious PDF — malware analysis report

Static analysis result for SHA-256 b72c3fa7c32a503f…

MALICIOUS

PDF

44.5 KB Created: 2020-08-06 01:35:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fab4cdcd18dcbcc64bcf10d307c4954e SHA-1: 465922834af6f15be0d1e91a68c19cfa81e1a6d2 SHA-256: b72c3fa7c32a503f84757bd0bc351cff309b6ef563a3c32ba3a297b6dd4d114b
234 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a visible LOLBin command execution instruction and multiple embedded URLs, including a critical link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=convert+html+to+pdf+angular+4'. The document body, though partially corrupted, also contains this URL and references to PDF conversion tools, suggesting a lure. The presence of a mass external PDF link farm further indicates malicious intent to distribute or redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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=convert+html+to+pdf+angular+4 In PDF document text
    • http://files.keith-tealeaf-henley.com/uploads/1/3/1/8/131871786/vanevelesipej.pdfIn PDF document text
    • http://files.bfpartyrentals.com/uploads/1/3/0/7/130739719/ralobevibutukigotus.pdfIn PDF document text
    • http://files.thearamaicscriptures.com/uploads/1/3/1/3/131383467/33730e325b5.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/1/0431/6463/1195/files/wubisaviramulup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/loxutiwijadewafulon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1712/6567/files/45572282656.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7392/9378/files/rutagopijiruxugibedip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7577/1304/files/wegiminololusogoxuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7678/6078/files/wozuvisuwifemir.pdfIn macro / runtime command snippet
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32377204601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3309/1480/files/bebetamuloxojadigibumiliw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0751/6565/files/bomobafokag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3641/6936/files/xaginigokalanutenut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7212/7125/files/juvef.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B5 5332 bytes
SHA-256: e23458f122ef1c709f6f26520252cf1eff2a328b91456b1f41a90d0c76b2f5f4
font_01_sfnt_off000072ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72BA 15608 bytes
SHA-256: c49d3f0f343e47a9265e6be940c65644e00c877bb9c5a59760e17eff4490dc2d