Malicious PDF — malware analysis report

Static analysis result for SHA-256 58294c02e1adba30…

MALICIOUS

PDF

42.6 KB Created: 2020-08-27 14:43:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: adbac9e9019e8d1cb9dd224debeef77e SHA-1: d18f2aa356b3b4e7847e3dcc7ffd89a6ec604831 SHA-256: 58294c02e1adba30179656e41607bd3a76ed1fd3a6f61d80d7132553e21a0e84
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links that redirect to a known malicious domain, ttraff.ru, disguised as a 'Farkle score sheet pdf'. This indicates a phishing or social engineering attempt to redirect the user to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of malicious redirector links is sufficient evidence.

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=farkle+score+sheet+pdf In PDF document text
    • http://files.lisawisdomartist.com/uploads/1/3/1/4/131483138/8ebbd45.pdfIn PDF document text
    • http://files.marsworthschool.co.uk/uploads/1/3/1/4/131438523/ledojir_xejifuji_losifij_welasazisifuriw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8344/0030/files/4998603354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5026/9849/files/zamobuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2661/1356/files/english_test_for_3rd_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2526/7877/files/kivesefip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5723/3576/files/70610586713.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3459/7784/files/inscribed_and_circumscribed_circles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0913/9110/files/tafim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5844/5979/files/lucky_buck_mineral.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 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005bfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BFD 4896 bytes
SHA-256: 732dba4eadbc4c2e0359dc12cb701e466caf79356c61d5796be5a3775d5ac23d
font_01_sfnt_off00006cb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB7 10364 bytes
SHA-256: 3ffc9fcdb28e81221940f2a61747f9d549c6bc5c9337a935fa24ddd55aabf77f
font_02_sfnt_off0000900d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x900D 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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