Malicious PDF — malware analysis report

Static analysis result for SHA-256 17da88ee3c6fd4a8…

MALICIOUS

PDF

42.6 KB Created: 2020-08-15 01:52:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2ef01b61f3f4da22e019c2bf3e495795 SHA-1: bbbcffa11435b170c4e62d7a890b032e7ee4bb75 SHA-256: 17da88ee3c6fd4a8b355e70533f816dd3398593978004dc6a340932357cbffe5
194 Risk Score

Malware Insights

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

The PDF contains numerous links to SEO redirectors, including a primary one at 'https://ttraff.ru/pify?keyword=best+area+calculator+app+android', which is flagged as malicious. The document body, though heavily obfuscated, contains text and URLs that align with a lure for a 'best area calculator app android'. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests an attempt to distribute malicious content or phish users.

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=best+area+calculator+app+android In PDF document text
    • http://bumiwamos.ptofarmington.org/uploads/1/3/0/7/130738970/d2dd5e4336dcf.pdfIn PDF document text
    • http://rurazo.zoneadvisory.com/uploads/1/3/0/8/130813669/finom-tuzisogepixozoj-dezibaxepib.pdfIn PDF document text
    • http://files.stevethenaturopath.com/uploads/1/3/0/7/130775953/sujopobuw.pdfIn PDF document text
    • http://files.irelandtravelplus.co.uk/uploads/1/3/1/8/131856050/gofajodax.pdfIn PDF document text
    • http://files.larryagibbons.com/uploads/1/3/1/4/131407424/7356694.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/1/0430/5072/9634/files/femaxiwujaxugese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2795/4853/files/85046086619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6529/3462/files/art_and_answerability_bakhtin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5784/8224/files/malon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6208/4262/files/90086942155.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4285/5319/files/gikesawaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7869/7631/files/2016_new_year_meme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/nemelirifexij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5247/3252/files/wibebuxuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0311/7719/files/42691564610.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 8

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_off00006a34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A34 5116 bytes
SHA-256: 94ff94ff8bf1a4116dfa591398a23131baf085e367126c69cd574ab661c42789
font_01_sfnt_off00007ba3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA3 10020 bytes
SHA-256: 00fe12f963a42605296465fc0199b6cbb51c4636621b935ad025900a0a6b0539

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