Malicious PDF — malware analysis report

Static analysis result for SHA-256 4637e370b599e18c…

MALICIOUS

PDF

45.6 KB Created: 2020-07-31 05:07:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a87cd731676c5ae1dc415a5399791d34 SHA-1: 5d9651446f5c78ab201af622f8f653b1dfa4a71c SHA-256: 4637e370b599e18cc62702f3df8dae81aa84969f7247af78594d49bee084d6ef
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links designed to appear as legitimate downloads, but they redirect to a malicious domain (ttraff.com) for SEO-based phishing. The document body, though heavily obfuscated, suggests a lure for a 'Tamil to English dictionary pdf free download'. The presence of multiple external PDF links and a redirector points to a campaign distributing potentially harmful files.

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=tamil+to+english+dictionary+pdf+free+download In PDF document text
    • http://files.keishamorris.com/uploads/1/3/1/6/131636833/c0058d61a67249.pdfIn PDF document text
    • http://files.corkholistichealingdirectory.com/uploads/1/3/0/9/130969809/89c5a4b.pdfIn PDF document text
    • http://files.andbreathefilm.com/uploads/1/3/1/4/131483097/rawujujafazup.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2598/7741/files/zabepivexamuvepan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6697/3589/files/42820712379.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8283/2280/files/lufaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9740/0223/files/39793383442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7539/3944/files/41452723148.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8911/6840/files/61617464387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6625/3724/files/29061359668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3626/2050/files/sabegugopezogata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6833/2959/files/84259613144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4374/1083/files/16609909352.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9228/6363/files/2705448111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69892687871.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006392.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6392 5500 bytes
SHA-256: 46bbead73024812679cff0ed444f941439257084c2beb33711dc7af032c85d88
font_01_sfnt_off0000762b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x762B 4328 bytes
SHA-256: 1fc4b0db848e79bc0400bbdda1f81c942970fcaaa8b410b7e6469294e333e7eb
font_02_sfnt_off000085c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85C7 10232 bytes
SHA-256: 62f8d14a430c8d6f4e515c302fbfcd5fee3e2a010b7b2c8e929d336a497bdca9

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