Malicious PDF — malware analysis report

Static analysis result for SHA-256 74bc59b60e8d1107…

MALICIOUS

PDF

47.1 KB Created: 2020-07-30 20:24:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2ae7f47e5660e6d940bc7998c4e0093f SHA-1: efaf205b32ce83c30f7534af7c4957ce00f442c7 SHA-256: 74bc59b60e8d110705b6e51cf1111a13b68e9b0acd86feb22d435a0a8ac25b3e
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body, though heavily obfuscated, suggests a lure related to academic results, aligning with phishing tactics. The presence of many external PDF links indicates a link farm strategy, likely to distribute malicious content or host phishing pages.

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=bnmu+part+3+result+2020+pdf In PDF document text
    • http://files.brandjourno.com/uploads/1/3/2/6/132695525/9323520.pdfIn PDF document text
    • http://files.sneakerempireorange.com/uploads/1/3/1/4/131483371/bakutiji.pdfIn PDF document text
    • http://files.guarddogsurveillance.com/uploads/1/3/1/6/131606815/tapiviw-giragupobimesa-nidixibi.pdfIn PDF document text
    • http://files.petersoncounseling.org/uploads/1/3/0/7/130739937/dobapuru.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/1/0428/2292/6492/files/83108226302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0755/7275/files/zobodakaviboxanisi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0832/6812/files/lepakegatut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6556/3549/files/mimodutalezudinop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9234/3970/files/dogitimotapananafoximiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/85563012049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/20902720792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9244/2264/files/puxubogozetolixon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6104/9494/files/tugivel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4603/4853/files/99064329129.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/lamijoduruzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3071/6322/files/xazid.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_off00007aab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAB 5400 bytes
SHA-256: 29313ec4d7a68118fda3a7c71f93b7fbf021e1ff7ccc3cc0e398e5557332fd57
font_01_sfnt_off00008cdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CDB 9984 bytes
SHA-256: ce02cc68af67b9fb92e8a3b0c3afa98a65032d05a3b242e398c715ece29e233a

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