Malicious PDF — malware analysis report

Static analysis result for SHA-256 0413f9bd87b47be9…

MALICIOUS

PDF

75.9 KB Created: 2020-07-31 01:58:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1b82e1a552ceba7520f9043b9fee9a4c SHA-1: 6a5d826086de9ba8d1be3dac78ed8bda8fc9f676 SHA-256: 0413f9bd87b47be9eae5c32e9196d33150d91dffabf15456f90339e73f59cab8
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external PDFs, many of which are hosted on Shopify and appear to be part of a link farm designed to attract search engine traffic. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=obligationenrecht+franz%25C3%25B6sisch+pdf', suggesting a phishing or malware distribution attempt. The ML classifier also strongly indicated maliciousness.

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=obligationenrecht+franz%25C3%25B6sisch+pdf In PDF document text
    • http://files.baseballforyouth.com/uploads/1/3/1/4/131410094/d01b94f17819.pdfIn PDF document text
    • http://files.ptcolormarket.com/uploads/1/3/0/7/130739073/fulixemena_mobetaz.pdfIn PDF document text
    • http://files.bereanwest.com/uploads/1/3/1/3/131383604/ravem.pdfIn PDF document text
    • http://files.barbaraminorenamels.com/uploads/1/3/0/9/130969237/beposogixo.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/1/0433/0687/7080/files/87960197539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6955/5356/files/lepakosukasiledipedaguban.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/71482320097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7727/1716/files/piligavepuzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1819/6891/files/zarexesamijivemakovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6287/8618/files/zubeli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/26160609228.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/fudedijixipamipofinexijiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3400/7973/files/pidusozuledexame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2168/0283/files/pixajelaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7504/2457/files/67581286215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8258/7039/files/88305300997.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0008/6180/files/penanupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0877/8663/files/kimaj.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_off0000de04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE04 5560 bytes
SHA-256: 99e1e735c6b05c4ba94fc3c91004bdc2a0d8ea23f30cf9789c820744774a48bb
font_01_sfnt_off0000f0a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A2 15676 bytes
SHA-256: 89ebbf22809a936fd6ff0cb83206c488a81caea360f6271e4fb8134903deb502

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