Malicious PDF — malware analysis report

Static analysis result for SHA-256 3aabf328180aaa80…

MALICIOUS

PDF

44.0 KB Created: 2020-09-18 08:58:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 87c79bb5cc78a1c1fcb8f3ae6c701418 SHA-1: 2bc6f6831b6e33378f32d4db5414998312614ef9 SHA-256: 3aabf328180aaa80cce769afc6e45fbeca8902da2a02a0e07f6ba9e5837d16c7
194 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many of which point to external resources, indicating a link farm or SEO poisoning attempt. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though partially corrupted, contains text related to 'Principles of highway engineering and traffic analysis' and a URL that mirrors this, suggesting a lure to a malicious site disguised as a document download. No scripts were extracted from this sample.

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.club/wix?keyword=principles+of+highway+engineering+and+traffic+analysis+4th+edition+pdf In PDF document text
    • http://bafolot.mymgss.com/uploads/1/3/0/7/130775172/lujagux.pdfIn PDF document text
    • http://litenu.cranechuanfa.com/uploads/1/3/1/4/131409236/3798648.pdfIn PDF document text
    • http://todofula.matthewaromero.com/uploads/1/3/2/6/132695649/mafetexidewu-fajibiz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8812e094-89a1-4074-bc2c-0457672b0e2c.filesusr.com/ugd/bdeb4c_856c4673f2ab45f7ad3ecffd54a8deee.pdf?index=trueIn PDF document text
    • https://c1c1ad5f-7d66-4b6a-bcac-4e997a721f6a.filesusr.com/ugd/8a9bcc_f86c069057454f5f9b873ec0b38c6e74.pdf?index=trueIn PDF document text
    • https://e705488b-64f7-415e-9d4d-5810a0997a14.filesusr.com/ugd/140efa_d94d3b15e3774d5bb238b915c831f1dd.pdf?index=trueIn PDF document text
    • https://33007095-bfa4-4e93-9ec9-a8ee12d178a8.filesusr.com/ugd/003b86_7f3058c8e32b48c5bbc1c97ebc7dc3c3.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6150/2362/files/perianal_abscess.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8093/1733/files/20712013105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2683/3823/files/napusorilaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5027/0869/files/formative_assessment_process.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0704/9877/files/68995973783.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 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_off00005fcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FCD 5700 bytes
SHA-256: be06097b68146e4290f8af59d9a240b47ee372e004f114ca50a4d3fa7a6c9bed
font_01_sfnt_off00007350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7350 15312 bytes
SHA-256: fcca2ef3d532ec77628932ec9987d533ef55cbc53654058f610e22cc8e4f53b9

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