Malicious PDF — malware analysis report

Static analysis result for SHA-256 a792c25c0ceadb9f…

MALICIOUS

PDF

36.0 KB Created: 2020-08-23 03:32:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9f9f71c6d3fcfd9d3332393f666d0f3d SHA-1: 719aa728460c5aee04f6e05b62c60920c76ad2cd SHA-256: a792c25c0ceadb9f9b22d0ef6a2dedb343599af6ac303563754d9db044b7e882
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text fragments including the malicious URL and keywords like 'Acura carplay android', suggesting a lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy. The ML classifier also strongly flagged this PDF as malicious.

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=acura+carplay+android In PDF document text
    • http://rulefife.caitlin-cannon.com/uploads/1/3/0/8/130874368/735b392217b3.pdfIn PDF document text
    • http://files.bestficoscore.com/uploads/1/3/2/7/132740670/fawiweda.pdfIn PDF document text
    • http://files.axxonkorea.com/uploads/1/3/1/3/131379732/pefiverafilo_jasivewakobiwov_timevi_lojemomuri.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/1/0433/3754/7929/files/26938922684.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/0338/3708/files/cannabinoids_for_medical_use_a_systematic_review_and_meta_analysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0794/2549/files/sofipesosorevo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6515/5489/files/mebufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7230/5817/files/55813072601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1385/5643/files/80347073991.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3262/4797/files/38160764539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5843/8056/files/rodamugalejapodojiruner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5053/2001/files/carrier_edge_thermostat_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2906/1014/files/34672301811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15501301831.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_off00004dca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DCA 4980 bytes
SHA-256: b23819887241e0fbdc4b37dd378591647f1cb4bc4f71b0c2db81b60b6d30b2e4
font_01_sfnt_off00005ecf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ECF 10340 bytes
SHA-256: 1e8c51d2f0896e55a14fd5eb356f76eaea9aa3983d29c4a60fbaace643f6d754

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