Malicious PDF — malware analysis report

Static analysis result for SHA-256 9acaf89c56b3af1b…

MALICIOUS

PDF

48.9 KB Created: 2020-08-25 06:22:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 26ed25756e336559ae95db6d5eff375a SHA-1: bd2bf7c0c9531c0686913eccdd4bd3b60f172d37 SHA-256: 9acaf89c56b3af1bd961361be40e4a6c5cdf43ce1669d524aee948f98d072bc6
194 Risk Score

Malware Insights

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

The PDF contains a high density of embedded links, many pointing to external resources, which is indicative of a link farm or redirection tactic. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags a URL leading to known malicious infrastructure. The ML classifier also strongly suggests maliciousness. The document body, though heavily obfuscated, contains the URL https://ttraff.com/pify?keyword=lizardmen+guide+warhammer, which is likely used to redirect the user to a malicious site.

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=lizardmen+guide+warhammer In PDF document text
    • http://files.stjohnwc.org/uploads/1/3/1/8/131871980/a27e927d4d3.pdfIn PDF document text
    • http://vavabi.myswimplatform.com/uploads/1/3/0/8/130814070/pepilidasu-pugikiki-zatunaxites-guvuratoz.pdfIn PDF document text
    • http://kililugo.paintedtreasuresdenver.com/uploads/1/3/0/7/130775166/dajatap_jekeb_penepedapujes.pdfIn PDF document text
    • http://files.dognationmotors.com/uploads/1/3/1/3/131384171/zatow.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/1/0427/6482/8838/files/bafuluvufileraziwomutifix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0515/7269/files/instant_family_review_parents_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/xiwujuvepagus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6365/7119/files/jevoviresifezokikevowusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8385/8080/files/venture_capital_funding_rounds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0631/2093/files/47283718679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4942/6839/files/78359607979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2934/9030/files/dozopavapavad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3718/6458/files/new_android_apps_june_2019.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 5

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_off00008377.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8377 5112 bytes
SHA-256: bc6a0e85b8a10e29e307aee48399af04c15f4b9f29165f92ed9ede2f86f523a0
font_01_sfnt_off000094c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94C6 9980 bytes
SHA-256: 35b882427848eebb972e36c2b3e55abc3855677b7e4bf2c78f038b99a39c1e4f

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