Malicious PDF — malware analysis report

Static analysis result for SHA-256 478b85863c619f53…

MALICIOUS

PDF

41.4 KB Created: 2020-08-19 14:52:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c6092c05a3308490ccc74daba3616e1f SHA-1: 9b6b8172cb9824635b990551367d9a5e81eae6b5 SHA-256: 478b85863c619f534b9c51e87d9563bed7cc8060a1aa1b3ad692f825d76e9cdc
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'. The document body, though heavily obfuscated, contains this URL and appears to be a lure related to report writing. The presence of numerous links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to distribute malicious content. The ML classifier 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=sample+introduction+to+report+writing In PDF document text
    • http://files.cls-asia.net/uploads/1/3/0/9/130969624/64660f4.pdfIn PDF document text
    • http://files.lrxkinex.com/uploads/1/3/0/8/130814132/2049138.pdfIn PDF document text
    • http://files.vibrantlifestudio.com/uploads/1/3/1/3/131384127/lizizexem-vimukemafuja-poxekara.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/1/0435/4532/9832/files/bhagwan_all_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0291/2168/files/introduction_of_biochemical_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9126/7488/files/66279227212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rexalomofovuwazeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5376/9123/files/creative_and_critical_thinking_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3937/2965/files/36270114013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2556/1757/files/esl_adjectives_games.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2734/9159/files/pneumatic_air_motor_ppt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0187/1512/files/56356959350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9565/4564/files/65505875959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4114/4483/files/winchester_model_1400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6200/1821/files/nirunogo.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_off00006400.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6400 5408 bytes
SHA-256: 8fc9a811326c5d7ba48cd287b6f19f7ce5326c2923b20001aa6e0c2f3358b902
font_01_sfnt_off00007652.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7652 10060 bytes
SHA-256: b5dea7d979171667b32a30627180dabeef8ca8196ba4dd3ae62a6861bba62099

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