Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d4d9e47c4371f4d…

MALICIOUS

PDF

43.5 KB Created: 2020-08-21 09:12:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: edf4b3c70d178034b7d1268e4dcafc2e SHA-1: f3ea7db059286afcad818062ec09f098d8b0a52b SHA-256: 7d4d9e47c4371f4def24d386ec704590175216709881900d773349446bb19b0b
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to what appears to be a link farm designed to host or redirect to other documents. One prominent link, https://ttraff.ru/pify?keyword=bigo+live+app+store, is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other PDF links, suggesting a phishing or scam attempt to direct users to malicious sites. The ML classifier strongly supports the malicious verdict.

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.ru/pify?keyword=bigo+live+app+store In PDF document text
    • http://folupe.bayareamuslimtherapists.org/uploads/1/3/1/3/131379163/1096155.pdfIn PDF document text
    • http://files.mrspoolsbearcatclasses.com/uploads/1/3/0/8/130814531/2235454.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/1/0431/8717/5588/files/bhairava_movie_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3152/7577/files/40005811210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0044/7655/files/41559526379.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4211/8555/files/wow_classic_hunter_macros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7613/0718/files/togopiwatazemokatoketiru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1143/2867/files/bse_odisha_6th_class_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2240/7064/files/guturopuzojalexijamuvedim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5901/9933/files/56522475316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1682/9603/files/vabew.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 5

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_off00006bb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB7 5096 bytes
SHA-256: b29fe8c423cbb5cdec851db07490eadb4985f178f764cef974cd08f321abefef
font_01_sfnt_off00007d22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D22 10840 bytes
SHA-256: 61e6657f7fc68eedfb97760b978437c10b997864b880340ad13e42959845c711

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