Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b3988671c50f811…

MALICIOUS

PDF

38.2 KB Created: 2020-08-01 04:44:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cd477dbdb8148f63591d43cb80928b7a SHA-1: acd0567342d048a3bd6adc173f6827e5eff347c4 SHA-256: 2b3988671c50f8110d5f43deab549ffa2e703edf83479805c5416e296adb0c7d
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a lure for a 'Schlumberger petrel manual pdf' and embeds numerous links, including a critical redirector link to 'https://ttraff.ru/pify?keyword=schlumberger+petrel+manual+pdf'. It also features a high-severity heuristic for a password-protected archive lure, suggesting a multi-stage attack where the user is prompted to download an archive. The extensive list of external PDF links points towards SEO manipulation tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=schlumberger+petrel+manual+pdf In PDF document text
    • http://files.slpny.com/uploads/1/3/1/8/131871740/parixep-rafebi.pdfIn PDF document text
    • http://files.koalapouches.com/uploads/1/3/2/6/132681513/8242133.pdfIn PDF document text
    • http://files.targetedsalesservices.com/uploads/1/3/1/0/131070702/e3d35442b21c.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/1/0434/3391/8616/files/budozef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6451/6005/files/47510132132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0708/1622/files/jolilarisijapilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3802/3592/files/49083546696.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/jagemimavomotobaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8316/0995/files/mevibuxadewotuworubokila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/galuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3758/1734/files/bard_and_faulkner_solutions_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9880/8224/files/foundations_of_nursing_7th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6592/3992/files/xidotetofen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9454/0452/files/99863366606.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4828/8935/files/16562682511.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2450/6266/files/kilalonanopito.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 1

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_off00005840.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5840 5632 bytes
SHA-256: f5e35727d2614caa9cb5f7eebf83ad9e5671ff63ec2cedb4b2797d7961b0ae8e
font_01_sfnt_off00006b34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B34 9676 bytes
SHA-256: 7300615b9ff9ee91cb6c44154f5c195442eb97429d564e5b6a2103f24b0bc7c7

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