Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d610a7160cba772…

MALICIOUS

PDF

47.5 KB Created: 2020-08-09 02:17:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bf1e3d6ed4cd65173f6daace5f2bb14c SHA-1: 74b5f2caa383add1da7a32694d50a26d90b8e3fb SHA-256: 4d610a7160cba772afded3d20b353f8e802e9003c7ee845bd8df3d88dfa343d5
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=goblin+stay+with+me+guitar+tab+pdf'. This URL is embedded within the document body, suggesting a social engineering lure disguised as a guitar tab. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy, likely to obscure the malicious redirector and improve SEO. 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=goblin+stay+with+me+guitar+tab+pdf In PDF document text
    • http://files.eidolonmedia.com/uploads/1/3/1/4/131438274/muwutagig-pibode-buduvimisigis-nupebora.pdfIn PDF document text
    • http://files.linderdwyertherapy.com/uploads/1/3/2/3/132303123/sitetizasolagat-tirujifoni-pukowi-fodisepudutud.pdfIn PDF document text
    • http://files.bigshotpressurewashing.com/uploads/1/3/1/3/131398117/wigaz_gijoxa_mogurudawet_lusexibibibesu.pdfIn PDF document text
    • http://files.rachaeltilly.com/uploads/1/3/0/7/130739140/noxizunubigebolop.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/1/0431/5109/8007/files/pexosefitawejeroxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2956/0486/files/mederi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9212/3554/files/513641241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6372/9557/files/vugamojupexinigawagev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4138/2812/files/bihar_stet_question_paper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7063/5678/files/maruzuvigewebejukotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/isaac_asimov_ignorance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2518/6466/files/wutaziwupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rerotapok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3147/7922/files/rixexaxotezixabapikarek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6248/4392/files/38441500180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3094/3643/files/bopinosukipopibijobowotib.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 4

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_off00006cbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CBD 5820 bytes
SHA-256: 9b41bda972fe80f7c53e90b88946a70817d422105d249cfe7751c8a4d035ec91
font_01_sfnt_off0000807b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x807B 15344 bytes
SHA-256: 1f8ac9b54f1d9bc3f6621de5e9f90a394d8169d9c2d09d1216b6a7c6a82bf309

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