Malicious PDF — malware analysis report

Static analysis result for SHA-256 2572b6a01d4101b8…

MALICIOUS

PDF

39.8 KB Created: 2020-08-18 19:53:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7158493d61f3209d420df1f30873895e SHA-1: fb8ca2fc20935711cf22801c4115e08fd796dc77 SHA-256: 2572b6a01d4101b8418b46fddd1b6dca1fe2c9f0a510f00afd608e7f0084561c
194 Risk Score

Malware Insights

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

The PDF file contains a prominent link that redirects to a known malicious domain, ttraff.ru, which is flagged as a malicious redirector. The document body also contains text related to 'Alien shooter mod apk android 1', suggesting a lure to trick users into clicking the malicious link. The presence of a large number of embedded links, many pointing to Shopify domains, further supports the SEO link farm heuristic, indicating an attempt to manipulate search results or distribute malicious content through seemingly benign platforms.

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.ru/pify?keyword=alien+shooter+mod+apk+android+1 In PDF document text
    • http://files.arcnwi.com/uploads/1/3/2/6/132682295/regoxezilev.pdfIn PDF document text
    • http://files.lavidaarizona.com/uploads/1/3/1/1/131164152/muduwaxar.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/1/0430/4456/9242/files/bangalore_days_songs_tamil_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/50950656592.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6572/1503/files/xoziw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3461/3659/files/periodic_table_sat_chemistry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1982/8386/files/kejavaromibasefimawixebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/innate_and_adaptive_immunity_lecture_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9227/9463/files/xavojopadikotamijaraf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5326/0706/files/45872695505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7341/3032/files/28384206106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2230/9786/files/1132297845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4233/8981/files/sasuziposixilideto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7752/4888/files/zarezokefubisefilis.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 2

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_off00005ce5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE5 5304 bytes
SHA-256: 69f8e32a6b7da1d96c41c47ab86b840770067a72dde0773b50c783671b51c381
font_01_sfnt_off00006ec0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EC0 10384 bytes
SHA-256: 535ff652d4e5618c4e34442daa4e7079a6db018b2d89e343af5a7153edfc68fe

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