Malicious PDF — malware analysis report

Static analysis result for SHA-256 bca6f699c0c5211f…

MALICIOUS

PDF

40.4 KB Created: 2020-08-24 00:18:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 688c3f611624e3eb5b795b715ce8db86 SHA-1: 0fa892504298c5fadb9ed43ac47cb4728ff51021 SHA-256: bca6f699c0c5211f14d043d55767de3ded1a8435d928d8011ec1e28e6e47ef27
194 Risk Score

Malware Insights

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

The PDF file contains a lure related to a "Game center mod apk" and embeds multiple links. One of these links, `https://ttraff.cc/pify?keyword=game+center+mod+apk`, is identified as a malicious redirector. The document also contains a link to `http://fopazif.titansinvite.com/uploads/1/3/0/7/130776255/ramiwuzaju_tirotuz.pdf`, which is flagged as unknown reputation. The presence of a malicious redirector and the SEO link farm technique suggest an attempt to lead the user to malicious content.

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=game+center+mod+apk In PDF document text
    • http://fopazif.titansinvite.com/uploads/1/3/0/7/130776255/ramiwuzaju_tirotuz.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/1/0437/9879/0301/files/pic_assembly_language_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9027/1642/files/ruxojulujabozijom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5042/6780/files/51957362779.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4478/9669/files/busuxudezeximusugizopolum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4654/1211/files/danumepukixipukukoxud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3057/6285/files/genre_text_grammar_technologies_for_teaching_and_assessing_writing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8510/3255/files/12589880180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/wubixakebimos.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49B0 5104 bytes
SHA-256: 98b80b070435d4ec0eec954dd6424d9b580739af03dabec171b99fac60f4b607
font_01_sfnt_off00005afa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AFA 10420 bytes
SHA-256: 97e48f13bc165ddc3581a50036ab38f22237e3b3895222e16b00a309b7c5542d
font_02_sfnt_off00007ee4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE4 16092 bytes
SHA-256: bfc441d837b7b3b6e145db50ef40ca26079b22b75b7d4883bc21c88ef510c1a9

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