Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f577370f43312b9…

MALICIOUS

PDF

59.8 KB Created: 2020-08-11 02:53:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 07d73b19108f18d868197e5841cc96c9 SHA-1: 2e9e08de80401bf3aaf1cc0754a4750fe0a0a169 SHA-256: 0f577370f43312b94830bb38e574e3dc09a4eafd9f7ab870e7580812115c3b3d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to appear as academic papers, but they redirect to a malicious domain (ttraff.ru) via an SEO redirector. This indicates a phishing or scam attempt to trick users into downloading potentially malicious content. The ML classifier strongly supports the malicious verdict.

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=study+of+ultrastructure+and+morphological+classification+of+bacteria+pdf In PDF document text
    • http://dilarogik.leisuretravelsrilanka.com/uploads/1/3/1/3/131380005/6411364.pdfIn PDF document text
    • http://kosuxi.upsidedowndimples.com/uploads/1/3/1/4/131482975/7982a.pdfIn PDF document text
    • http://lofunudo.sacredsummitchocolate.com/uploads/1/3/2/8/132814930/gorivezorokid.pdfIn PDF document text
    • http://nogigomoz.barrelrollnews.com/uploads/1/3/2/6/132681513/d65bced74e3.pdfIn PDF document text
    • http://files.ondspotentertainmentandprinting.com/uploads/1/3/0/7/130776573/be69cb5b6.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/1/0432/8646/2620/files/43117491721.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6993/1671/files/balancing_chemical_equations_examples_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/bafeleviziwokaxek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6643/3435/files/38058291484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/bearing_tolerance_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1905/9868/files/mathematics_worksheets_for_grade_8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8003/1135/files/fezuxavesavivupanovovelej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5989/4682/files/tapagejela.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8421/0583/files/external_courts_esawebapp_e_payment_epaymentsearchframe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1566/6840/files/mepininado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6795/5605/files/46011920337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2619/4336/files/zisexopamowim.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 4

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_off0000aa1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA1C 5912 bytes
SHA-256: 23f19e7b83408a487a21dd15bd7e338b4432852a68fb637d15390c4108f5d0ea
font_01_sfnt_off0000be0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE0B 10336 bytes
SHA-256: dab3b344fb77a1f209de47d47245c6d6f421a9a2a6d0fb8d82f56873993c98b5

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