Malicious PDF — malware analysis report

Static analysis result for SHA-256 b381a9e526559d88…

MALICIOUS

PDF

35.9 KB Created: 2020-08-14 14:59:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 846486100a3ef392d3cbae3fe43022cb SHA-1: fe5c6e3aa6454b5a7c317fa4dde0779d7e13f771 SHA-256: b381a9e526559d887580b7845b94cfdebf48a13fecbb20beacec15ac1b17cb81
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a prominent link disguised as a "Solidworks 2012 free trial" lure. This link redirects to a malicious domain, indicating a phishing or malware distribution attempt. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely to manipulate search engine results. No scripts were extracted, but the primary attack vector is the malicious redirector.

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=solidworks+2012+free+trial In PDF document text
    • http://wedaxif.wheteach.org/uploads/1/3/0/8/130874104/xurawalojajerikiki.pdfIn PDF document text
    • http://sabanugad.theshamandoctor.com/uploads/1/3/0/8/130815026/4594892.pdfIn PDF document text
    • http://files.aunaturalqueen.com/uploads/1/3/1/4/131437091/fibumime.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/1/0429/6533/6217/files/vutilusuzinikifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8385/8080/files/jaditunaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0807/1576/files/paporixofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9985/7823/files/42711872065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5369/4626/files/33923673809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/76522028197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/69232609593.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/kakawedofodiwapulek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8335/6565/files/margaret_hough_counselling_skills_and_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4678/0566/files/60668995158.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tazoxusejeko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/bezemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4579/6512/files/rojigikabafowonixavobaser.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: qiboacupuncture.com 3 samples

Related samples 3

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_off00004e4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E4C 5484 bytes
SHA-256: 5f2a580981ff75e1f5d46f9ded1923840fb17519bcd2fa2415c40e2bdf6a95b6
font_01_sfnt_off0000611a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x611A 9836 bytes
SHA-256: 75aa2c1ed4c2a3d4b2f5704234a953a9755e9aed19760d739265c1c1415d5186

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