Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d8119d8f58b4295…

MALICIOUS

PDF

39.1 KB Created: 2020-08-14 20:33:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ffc2f4eaa3daa86dd4bf6f321ea5804c SHA-1: 7901f7d0aa138c525fd4ede4bba495df33c991d1 SHA-256: 9d8119d8f58b42957413c71af459845e6d16ea16b2fac71a3514c7a3dd41ba40
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, specifically `https://ttraff.com/pify?keyword=physical+science+high+school+textbook+pdf`. This indicates the document is designed to trick users into visiting a malicious site by appearing to offer a textbook PDF. The presence of numerous other links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility. No scripts were extracted, but the primary attack vector is the malicious redirector.

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.com/pify?keyword=physical+science+high+school+textbook+pdf In PDF document text
    • http://files.burghyart.com/uploads/1/3/1/4/131406977/493852524.pdfIn PDF document text
    • http://files.ucporegon.org/uploads/1/3/2/6/132682627/waxazutonakezanep.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/1/0433/5756/9189/files/repajapudijub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4571/4077/files/nufijuxikusipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1679/8883/files/riganobibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4895/9141/files/classroom_rules_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4464/1695/files/good_discord_setup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2026/2308/files/69391343618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5618/4992/files/getukemamar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zogubarekerebadopotuleju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9827/3944/files/50673200415.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/77750512547.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 8

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_off000059ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59CA 5696 bytes
SHA-256: 7677154210c73fa669edcbcb04b5baefa7818bcfe45a863a16b9e71744bfa447
font_01_sfnt_off00006d29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D29 10192 bytes
SHA-256: 42d6ddd3af82c3782886943daec5355b3948c26c88e4fab58a98426685b2c871

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