Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f4b746e8de663e2…

MALICIOUS

PDF

61.7 KB Created: 2020-08-17 08:54:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: be35145f385a2f4e5ec6ca2203732a4e SHA-1: e4c920a5153449cd72a2918478993028ae64a121 SHA-256: 3f4b746e8de663e2f29ca999689a1ffb3c91c3d5b7e3ee13869bb25b693d3ba5
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=priority+order+of+functional+groups+pdf'. This indicates the document's primary purpose is to redirect users to potentially harmful content. The presence of a PDF link farm heuristic further supports the malicious intent by suggesting the document is part of a larger scheme to generate traffic or distribute malicious links. The ML classifier also strongly flagged this PDF as malicious.

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=priority+order+of+functional+groups+pdf In PDF document text
    • http://files.caledonianps.vic.edu.au/uploads/1/3/0/9/130969652/2584a8f4a2340.pdfIn PDF document text
    • http://files.sciencesnail.com/uploads/1/3/0/8/130874254/8763227.pdfIn PDF document text
    • http://files.pickneychannel.com/uploads/1/3/1/4/131452838/limogazemuwo_sizitidodomu_rabuto.pdfIn PDF document text
    • http://lomed.huckleberryridgefurniture.com/uploads/1/3/1/6/131606346/c59cf1de3a426.pdfIn PDF document text
    • http://files.coreygradert.com/uploads/1/3/1/4/131453124/kekir.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/1/0428/0877/0726/files/bewetaxuwilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8082/7558/files/51545782200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5857/7064/files/brahma_kumaris_murli_daily.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3046/3142/files/xewoxupugefipofodimizam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8119/3885/files/cantate_domino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1470/1735/files/celebrate_recovery.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4509/3533/files/wamibituwirob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4975/3507/files/moonlight_greatsword_ds1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0088/7457/files/zuvivanugulopeba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5870/8118/files/44183549965.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9818/6663/files/probation_reporting_center_ramsey_county.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_off0000ac82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC82 5428 bytes
SHA-256: eee64cd354892d07baa057f7ad3736689e4dab44422bc956bf60eed7064d2c0b
font_01_sfnt_off0000bf0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF0C 12816 bytes
SHA-256: 9a2f6d7e51f9c8ad45fa4663168af141301ac1dc0e74f7dae536e0c96d850268

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