Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbc29c73d28480cc…

MALICIOUS

PDF

41.5 KB Created: 2020-08-18 21:31:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d3fa832806a1a4729a47b036f8558f52 SHA-1: c4cf69f4ee09558726dd6d7273cfd8599854f9cc SHA-256: bbc29c73d28480ccc63ee3bce5e66ef4548f0bd57fbeec04bc06e27066440eca
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains this URL and appears to be a lure for downloading 'Adobe Illustrator CS6 for Windows free'. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm SEO tactic to improve search engine ranking for malicious content. The ML classifier also strongly indicated 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=adobe+illustrator+cs6+for+windows+free In PDF document text
    • http://winil.littlebluebowphotography.com/uploads/1/3/1/3/131383258/2267253.pdfIn PDF document text
    • http://files.stteachinguk.com/uploads/1/3/0/9/130969751/0df970f6a21969b.pdfIn PDF document text
    • http://files.adventure-and-salt.com/uploads/1/3/1/6/131637016/fogonav-lorogikafixuj-kumaju-xewabakesozer.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/1/0436/0952/2339/files/semometubojo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4642/8072/files/applied_strength_of_materials_5th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1356/0727/files/nopegekixisojukexiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0227/3703/files/darix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wirokole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2898/7547/files/52124624252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8255/5297/files/xoxaxegirukopesigilolovab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3232/0917/files/answer_garden_logo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9125/5713/files/81092268271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7381/4182/files/gekoxovolisusiroxuxer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3852/0997/files/38399850840.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_off00006150.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6150 5392 bytes
SHA-256: 72758ff4dd647a813d8836e044dba67c47f1ab509a129118e0ac7afbb1fda00c
font_01_sfnt_off000073bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73BF 11116 bytes
SHA-256: c8c9ca19dc21cb38ee9f30cb399533aaad496bf459918d40c35a55358c920ebe

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