Malicious PDF — malware analysis report

Static analysis result for SHA-256 2673b12b79f5cd6b…

MALICIOUS

PDF

105.7 KB Created: 2020-08-25 16:09:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0df88c3d32ec2e92b61be5f03822ea1c SHA-1: ce7040da0d4e9f987a891d15524d21b0de44b24f SHA-256: 2673b12b79f5cd6b5943b4eb9de2f6c1cc912d9810642799cf727f1bf98941bc
234 Risk Score

Malware Insights

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

The PDF contains embedded links, with one specifically pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text that appears to be a lure related to a "Ben 10 video game". The presence of numerous external PDF links suggests a link farm or SEO poisoning attempt to distribute malicious content. The ML classifier strongly indicated maliciousness.

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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://ttraff.ru/pify?keyword=ben+10+video+game.
  • 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=ben+10+video+game In PDF document text
    • http://xabemidet.uniquestationers.com/uploads/1/3/0/7/130739430/taguteg.pdfIn PDF document text
    • http://files.jpvahelloworld.com/uploads/1/3/0/7/130739971/21252ef18e.pdfIn PDF document text
    • http://pomuv.libertybodyworks.com/uploads/1/3/1/6/131606758/7338648.pdfIn PDF document text
    • http://zejezifu.yukondaffodils.com/uploads/1/3/1/6/131606620/7754df15.pdfIn PDF document text
    • http://miraxor.naturalbiblicalhealth.com/uploads/1/3/0/8/130874050/nebake.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/1/0436/9874/9608/files/explain_the_difference_between_descriptive_and_inferential_statistics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5497/1557/files/samarutubavuxenoxoler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7123/4467/files/1434986097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0079/1191/files/70501150229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6385/9610/files/calamus_whitman.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0096/2977/files/12149317733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0172/4580/files/1580690421.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2866/7816/files/niralujoje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3059/4204/files/37113963264.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0655/8359/files/lindt_truffle_flavors_guide.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 6

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_off000162f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x162F5 5140 bytes
SHA-256: a0cf1588297bd05c9c5860472a6c2640ce09167c07a4c81eb8e31035eca88e9c
font_01_sfnt_off00017470.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17470 10948 bytes
SHA-256: 77fd42f6554ac6de80dd1d52e2ea391a15de4de0b4207c8814dc3b5db011ef0f

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