Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdf5fa75f18e8a31…

MALICIOUS

PDF

110.6 KB Created: 2020-08-04 16:33:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 76e29bddbd1a9248335bbe668a4eff60 SHA-1: 6c1d125c7656e3100bf4e3941573e94ebbb99180 SHA-256: bdf5fa75f18e8a31e472a5415fe6398196a5ef9f74c4e74524df1f7c4d4a2721
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.ru/pify?keyword=abnormal+psychology+butcher+test+bank+pdf'. The document body, though heavily obfuscated, contains text fragments related to 'abnormal psychology butcher test bank pdf' and the authoring application 'wkhtmltopdf', suggesting a lure to disguise malicious content. The presence of numerous Shopify links, while mostly benign, contributes to a link farm strategy.

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=abnormal+psychology+butcher+test+bank+pdf In PDF document text
    • http://files.pinehollowranch.com/uploads/1/3/0/7/130775228/goxesalozoperoxe.pdfIn PDF document text
    • http://files.charityfamilyreunion.com/uploads/1/3/1/0/131070109/borujebufiwosusix.pdfIn PDF document text
    • http://files.hackettville.com/uploads/1/3/2/8/132814247/wofulirono.pdfIn PDF document text
    • http://files.myrainforestpets.com/uploads/1/3/0/7/130775743/5393615.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/1/0431/4293/8784/files/jijujawagafenober.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3863/6192/files/baroque_guitar_plans.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9511/2347/files/luwasokokuwir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9340/2534/files/wezavugewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6741/5457/files/download_kitab_asmaul_husna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7026/7300/files/reduvima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9956/9832/files/jozudowodag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1952/5534/files/mejiru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6559/0438/files/62849678357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2522/5112/files/kokoruwofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/59557489636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6694/9799/files/discord_how_to_cross_out_text.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 3

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_off000174d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x174D8 5864 bytes
SHA-256: 097e01f3200be808de8d84b45788c2d4a80c0a2336f23679ca8741aa72216a7d
font_01_sfnt_off000188a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x188A4 10788 bytes
SHA-256: a1ef83aafac1e6d4e7e940b5c0711f3cd9777c7aa72ad52183e4cb2fac5c0a0a

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