Malicious PDF — malware analysis report

Static analysis result for SHA-256 92834fadcc2ac306…

MALICIOUS

PDF

41.5 KB Created: 2020-08-28 12:08:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a17f749cbba4146a5ace068d4ed7c0f3 SHA-1: 430da899c1544eff1aa9e507cf3efb284b5dacd0 SHA-256: 92834fadcc2ac3065d7d273f1d2dcd73ec770762d36b2b246b319ee08a9acd65
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external websites, a technique often used for SEO poisoning or to redirect users to malicious content. One specific URL, 'https://ttraff.ru/pify?keyword=should+my+download+speed+be+lower+then+my+upload+speed', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The ML classifier strongly indicates maliciousness, supporting the conclusion that this PDF is designed to redirect users to harmful sites.

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=should+my+download+speed+be+lower+then+my+upload+speed In PDF document text
    • http://files.tryhealthypaws.com/uploads/1/3/2/6/132681264/e80fa92.pdfIn PDF document text
    • http://files.lourie.co/uploads/1/3/0/7/130776490/2e1fa2b22520a.pdfIn PDF document text
    • http://tawosedi.virginiacanvasworks.com/uploads/1/3/1/6/131606727/tejegoxagojofag_ravemurikilulu_kasiluzililidit.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/1/0434/3991/5175/files/hahaha_challenge_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0391/7974/files/43024578269.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5281/7832/files/46068533603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3695/8104/files/koduzibavakuvesexevejirib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4982/5942/files/formative_assessment_strategies_in_maths.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5261/1222/files/xobovavajerifevor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/0278/9789/files/liberated_the_new_revolution_parents_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6511/4775/files/fake_credit_card_number.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1717/3149/files/93873044388.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0458/0130/8326/files/90317452656.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1641/files/42831005237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8544/6822/files/basic_english_grammar_book_3.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_off00006315.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6315 5636 bytes
SHA-256: c87b20232047dc64d4e83f49e9a88db1e59c8b53880427301d91dfe607e6c3e3
font_01_sfnt_off0000761d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x761D 10184 bytes
SHA-256: 15822c2bf68add8dcfbb86c15cb8794ab38709d83e6f42f97ee9c4a72321d246

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