Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bc4b0bd942028cb…

MALICIOUS

PDF

42.4 KB Created: 2020-08-18 15:28:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a2347701c9acb55a08c5de5c96aad1ab SHA-1: 23fe96cf308a382f2c7726556b62f9ed2537451a SHA-256: 9bc4b0bd942028cb6ea3b62a7c18d9d5861d655a0fa2ab4f58ff34f83d6ad9db
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 ttraff.com. Additionally, it exhibits a PDF link farm heuristic, embedding numerous external links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the URL that triggered the redirector heuristic, suggesting a lure to download further content. The ML classifier strongly indicates maliciousness.

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=gap+analysis+word+document+template In PDF document text
    • http://files.thefaithlife.org/uploads/1/3/0/7/130740524/d3c96d2c.pdfIn PDF document text
    • http://files.dreamteamtraversecity.com/uploads/1/3/1/6/131636843/7121578.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/1/0435/2992/8872/files/mildot_master.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/jafewemojuvenavevutisaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8062/1985/files/32835876771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9691/4600/files/fajefikiniwosul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/5315/8298/files/sebebapilarizuvusunigimi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2331/7662/files/65162976443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65496272691.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7368/3112/files/jifogukopiwexomipojajobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/herbalism_leveling_guide_vanilla.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1977/8720/files/22883760494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7744/9366/files/55310883320.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 3

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_off00006872.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6872 5444 bytes
SHA-256: 33b351d5c51aa3ea59efe397f6dcdcf5a77eaebc5f66053a759824b4b36ceec4
font_01_sfnt_off00007afa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AFA 9964 bytes
SHA-256: 2052029ffb5c9341b57fbfcaeb36762c7f8acd209e053030e41804ba6b45739c

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