Malicious PDF — malware analysis report

Static analysis result for SHA-256 03f827f8ab163669…

MALICIOUS

PDF

54.9 KB Created: 2020-08-05 02:45:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 33ad66db7a24ac258a2b81255554c302 SHA-1: e2e199b3a125a73037402d906db50f885f394ec6 SHA-256: 03f827f8ab16366947e5a487f19349307b16ebf330975b55a96bad0e0f45e3b0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links to external resources, many of which point to a redirector service. The primary redirector URL, 'https://ttraff.ru/pify?keyword=survey+of+clustering+algorithms+pdf', is flagged as malicious. This suggests the document is designed to trick users into visiting malicious websites under the guise of providing academic resources.

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=survey+of+clustering+algorithms+pdf In PDF document text
    • http://files.shiragirlschoir.org/uploads/1/3/0/9/130969811/5364685.pdfIn PDF document text
    • http://files.vichiswim.com/uploads/1/3/1/4/131406749/tizisazeto.pdfIn PDF document text
    • http://jiratit.pureintegrityverified.org/uploads/1/3/1/8/131856772/bopifevatuganijag.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/1/0432/6031/3763/files/65986427469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9087/0423/files/biteloganalabizevese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6811/9445/files/mesarifitelibuvarapifumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7013/6218/files/limizezevotigikevimef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7091/4717/files/bebuluboforesotarita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/99274556333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5704/5913/files/limikujebobiwonidaramopex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/52359770589.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2135/2606/files/11537038644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0356/6486/files/3075875106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/botolewapaniwid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2219/5608/files/revelation_road_4.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_off0000979a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x979A 5832 bytes
SHA-256: 61c2345b126334baa35fd66b46bbd05ed08b332a6ac0164e738238e72d3e2dc4
font_01_sfnt_off0000ab5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB5E 10196 bytes
SHA-256: 459ccf3af53443c5bf20d1603724b99c5a34838e980fd90d8f6aff9eb83cf19d

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