Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c6b83802579f6fb…

MALICIOUS

PDF

43.5 KB Created: 2020-08-08 21:58:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 18383fb86d4bb155775a7e785c588e74 SHA-1: 5e30ac6e5a4bf95780ab2e91adf6bf7ec2b71d47 SHA-256: 8c6b83802579f6fb456940de66d710bcb6fe66820e42f17c1754e14aa682c266
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that points to 'ttraff.com', which is flagged as malicious. The document body, though heavily obfuscated, contains text related to a 'car bill of sale utah pdf' and includes the malicious URL, suggesting a phishing or social engineering lure. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy to obscure the final malicious destination.

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=car+bill+of+sale+utah+pdf In PDF document text
    • http://files.theamplifyfoundation.org/uploads/1/3/1/8/131871627/8357524.pdfIn PDF document text
    • http://files.ellisonjazzmuseum.org/uploads/1/3/0/9/130969231/1332199.pdfIn PDF document text
    • http://files.mommabearessentials.com/uploads/1/3/2/7/132740805/582366add.pdfIn PDF document text
    • http://files.hramusicwest.org/uploads/1/3/1/4/131437438/e87b694e6f40c.pdfIn PDF document text
    • http://files.sjkim-tkd.com/uploads/1/3/1/3/131379514/6627895.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/1/0432/1483/1780/files/sibeboki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2737/3986/files/setekuxupefuketojuvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7839/3762/files/node_js_route.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9726/8128/files/dibabitewojatakot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5738/9472/files/rafezifaxofuxoxijosesax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3834/2311/files/waziwise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/zojodik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4152/9754/files/adolescent_problems_and_their_management.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4891/0491/files/66415237568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/70034698055.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_off00006c1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C1E 5176 bytes
SHA-256: bb71b3d4a64d2ef7071d3273f7c48380a2c4689aa2b4b3d5a97b76a272077ee5
font_01_sfnt_off00007daa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DAA 10416 bytes
SHA-256: eaa4d0aa47a7e9aa194ab7f205e68b7d0bffc2d615bf8c62f76e16712dcb04ee

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