Malicious PDF — malware analysis report

Static analysis result for SHA-256 16a329d1f61a1159…

MALICIOUS

PDF

45.6 KB Created: 2020-08-20 13:56:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5b92545a6e69d06f0581b9502937bff2 SHA-1: a8e08c05e961c2fd3610520f58ed99f7daceadfa SHA-256: 16a329d1f61a1159a283c357940f0642e693c24f5f062c0f7a45c3a700bc3127
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links designed to appear as legitimate downloads but redirect to malicious infrastructure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=bhairava+dweepam+movie+songs++telugu, which is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains references to movie songs and the PDF creation tool, suggesting a lure for user engagement. The ML classifier strongly indicates maliciousness.

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=bhairava+dweepam+movie+songs++telugu In PDF document text
    • http://lixasajep.riscooper.com/uploads/1/3/2/7/132712207/dekawubaduwevodune.pdfIn PDF document text
    • http://files.reginamoessmerdesign.com/uploads/1/3/0/7/130776449/dutarina-nefaloxenip-xuwefizakaxuxel-vomosesebipek.pdfIn PDF document text
    • http:///\/sangeethaswaralu.blogspot.in\/2013\/05\/naruda-o-naruda-song-lyrics-In PDF document text
    • http:///\/www.lyricsintelugu.com\/2010\/06\/virisinadi-vasantha-ganam-song-lyrics.html,video_url:,zoomit:0,premium_content:0,rest_lev:0,rest_msg_free:null,rest_msg_paid:null,_e:0,aes_enabled:1,aet:1,release_date:AprIn 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/1/0432/8590/5576/files/40620404113.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2637/5071/files/vejatonoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7624/7971/files/28864268355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3192/8740/files/destination_b2_grammar_and_vocabulary_with_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0205/1229/files/bsc_medical_laboratory_technology_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1637/files/12422954086.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7207/7475/files/jemubofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9794/7300/files/hipaa_training_challenge_exam_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3402/1788/files/free_asvab_test.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 3

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_off00006b41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B41 5572 bytes
SHA-256: 859b36a7dd5658ea9b4219ec44668a49da58aa4d3fa34a211b3ee86b7870d4ad
font_01_sfnt_off00007e2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E2A 14008 bytes
SHA-256: 7d6d7d7d22e44b58ee328fd312b477067d92c569fde3681d5e8f9c0d77e6d592

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