Malicious PDF — malware analysis report

Static analysis result for SHA-256 43c8872ece1a92b7…

MALICIOUS

PDF

62.7 KB Created: 2020-08-20 18:26:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 07369cf73cad81b61b3c90dfcd1a8005 SHA-1: 50450a9912717cc46d09d79b0c340aedfe3aef4e SHA-256: 43c8872ece1a92b79186c32916a40313714ea5abe77d82776590715186749adb
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=aulad+ke+huqooq+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the malicious URL.

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=aulad+ke+huqooq+pdf In PDF document text
    • http://files.coxevolab.org/uploads/1/3/1/4/131452922/velufiwizinefobu.pdfIn PDF document text
    • http://boweko.messyhandshappyhearts.com/uploads/1/3/0/8/130813604/xawumavenivok_riwawaletefeduf_xoded.pdfIn PDF document text
    • http://files.vicenzas-crostoli.com/uploads/1/3/1/4/131483253/9062675.pdfIn PDF document text
    • http://files.walkinginthewordministries.net/uploads/1/3/2/3/132303189/e90b0.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/1/0433/0032/3478/files/update_node_nvm.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2584/7704/files/character_analysis_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5399/6442/files/71025576670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3945/7431/files/anti_bribery_law_saudi_arabia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8542/2997/files/lodenufaxisaxireloju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3301/6982/files/dinazerezovororawijof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3728/5797/files/37305485551.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0602/4101/files/dnd_5e_cause_fear.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pegegezanonipilupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9924/3174/files/warehouse_inventory_spreadsheet_sample.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0000c264.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xC264 23976 bytes
SHA-256: 761a051d201a52c77337b301aacf538c68448b6f6e134bb06ad5ddca58161160
font_00_sfnt_off000082e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82E5 5036 bytes
SHA-256: 672604791d1068fd4138f78bf4bf6c85535083360896a21def56760c6a792fc0
font_01_sfnt_off000093fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93FC 14856 bytes
SHA-256: de67cd4569ce1bfb7c181b5be018a1bfcea8365efa97b2e63d65b2120a6dc782

Open this report in the interactive analyzer, or submit your own file for analysis.