Malicious PDF — malware analysis report

Static analysis result for SHA-256 64d7661cb39da07d…

MALICIOUS

PDF

44.1 KB Created: 2020-08-19 18:31:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c96a962168d6daf060d89b27eb121a33 SHA-1: bc0138d93df2f1eaf2a3673c4aacf0c88e3fa5e1 SHA-256: 64d7661cb39da07d2ecb1492ba33f0e4ba933977b7338a20897f7f83cf68b07d
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' heuristics. The document body, though obfuscated, contains the URL 'https://ttraff.com/pify?keyword=cover+up+method+worksheet', which is flagged as a malicious redirector. The presence of numerous PDF links suggests an attempt to distribute further malicious content or conduct phishing.

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=cover+up+method+worksheet In PDF document text
    • http://rojexi.amaranthineartist.com/uploads/1/3/1/3/131382406/miboxenovopeza.pdfIn PDF document text
    • http://files.ahealingplacespringfield.com/uploads/1/3/2/8/132814086/zebukabeborojiro.pdfIn PDF document text
    • http://voroj.stevescustomtattoos.com/uploads/1/3/1/8/131856706/84c35b2b8f.pdfIn PDF document text
    • http://wufevurum.minnesotaironwoman.com/uploads/1/3/2/6/132681337/rigamodovavalepajof.pdfIn PDF document text
    • http://files.janvantblik.nl/uploads/1/3/2/7/132740362/ziwifej.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/1/0435/8724/0095/files/95553681619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1265/2194/files/92646542725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5349/9046/files/gogusegorexit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1050/6404/files/74565434167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fulefevizurosojasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2330/9727/files/kiseniraji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8570/1019/files/.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6264/7191/files/biceps_tear_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6593/3973/files/candide_voltaire_portugues.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1705/1048/files/12514712460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/vunajirutoxizafukatatas.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 7

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_off0000692d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x692D 5080 bytes
SHA-256: 8fb9a0bd62b00dc0165b24257ecd0d3b0aa1126388a52a1593c35a9949c1d357
font_01_sfnt_off00007a65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A65 12040 bytes
SHA-256: f6e00e2fb95e0f03d493387c4bb91bf189baeaadc3ebfe6cb49cd297714f972f

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