Malicious PDF — malware analysis report

Static analysis result for SHA-256 18167ac757e06d58…

MALICIOUS

PDF

33.2 KB Created: 2020-08-17 01:45:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 2190ba5e7c694e29294ac2e3f85c8a14 SHA-1: 17444122ede461fbee2bd7b864c47dcdb7015031 SHA-256: 18167ac757e06d58f0fbace78bcaeaf6fe16dae5a668f7da4a2062642748d75b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, with a critical heuristic identifying a redirector link to 'ttraff.cc' that is associated with malicious activity. The document body, though heavily obfuscated, contains text related to 'Crash bandicoot android rom' and a URL, suggesting a lure for users to download something. The presence of numerous external PDF links further indicates an attempt to distribute content or redirect users to malicious sites.

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.cc/pify?keyword=crash+bandicoot+android+rom In PDF document text
    • http://files.underdog34.com/uploads/1/3/0/7/130740572/moderewagove-gijodi-zuwedoferawaxo.pdfIn PDF document text
    • http://files.operationglobalfreedom.com/uploads/1/3/0/7/130739214/talafu_kodut_pawaza.pdfIn PDF document text
    • http://files.christinebrumbaughdesign.com/uploads/1/3/0/7/130739376/2056645.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/1/0428/2207/4534/files/jojij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/liwisubusamepumiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2467/0105/files/86890814788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6807/0824/files/guwirarobatoxezilaroxoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0279/0039/files/lokubovorusowex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1730/4226/files/oxford_picture_dictionary_english_german.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7256/8996/files/nusodenufire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7904/9121/files/banking_and_finance_project_work.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4374/1083/files/75608787221.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2122/2567/files/car_games_parking.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 6

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_off0000447f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x447F 5192 bytes
SHA-256: c1aa871dd366cf29efbcfa36e98f4e1e0d00bc86890a3d445baf58b91e0512db
font_01_sfnt_off000055ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55ED 10104 bytes
SHA-256: 75637bdc30add8b357898cbf8e90ddaa713194891dac05bf8c78693836551260

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