Malicious PDF — malware analysis report

Static analysis result for SHA-256 58d1883ecae9e30b…

MALICIOUS

PDF

41.5 KB Created: 2020-08-18 23:49:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 266d6f1e1353ab38ac6525cb4c132dc6 SHA-1: 56e7e707bf22427758cd8544c238fb33c002d1f0 SHA-256: 58d1883ecae9e30b74d5b3819dd3506cc42a289946336fcbb7d5317716d8129c
194 Risk Score

Malware Insights

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

The PDF contains a link farm with numerous external links, including one pointing to a known malicious redirector at 'ttraff.ru'. The ML classifier strongly indicated maliciousness. The document body, though partially corrupted, contains the same malicious URL, suggesting the primary intent is to redirect the user to potentially harmful content.

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=carlyle+lake+fishing+report In PDF document text
    • http://files.flexcabling.dk/uploads/1/3/1/3/131398574/f30af2f3e13.pdfIn PDF document text
    • http://mozagip.hccrs.org/uploads/1/3/1/4/131437130/4287986.pdfIn PDF document text
    • http://nukexi.clairmontfarmservices.ca/uploads/1/3/0/7/130738902/rewesevapujavuj-nuxutosabeb-vobedulaxo-gezabuwapuw.pdfIn PDF document text
    • http://jevirumi.isaiahgruberphd.com/uploads/1/3/1/4/131482995/1364904.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/1/0429/4751/0435/files/halimbawa_ng_bionote_ng_isang_guro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9072/9377/files/vinunuteba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4929/5776/files/25979668768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2651/3048/files/31671532796.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8907/6117/files/60965197638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2023/0564/files/tuduvorirolupiwojakabupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3420/4568/files/35086093122.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3178/7670/files/seweviboredonak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5385/9494/files/radukubosilip.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B0 5232 bytes
SHA-256: cb80fb8e56eb502ff63e42214951b6a347c904fba90631d0aa12595e8e0b1ac1
font_01_sfnt_off00007687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7687 10180 bytes
SHA-256: 8db4e551aec76928fbc82ac650767bd93cc665884c0e003a2e2a0cf58c2422f6

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