Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c80378b959a49e0…

MALICIOUS

PDF

119.3 KB Created: 2021-01-19 07:03:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac0d60c97282bf3f8d3a18cd22982c9e SHA-1: efac8824876e0cf3b9eee849e9f8a3532b2ca3f3 SHA-256: 0c80378b959a49e08c9244e09ab0e6cbe676522cef64ae42faa63973d5ab47d0
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was identified as malicious by multiple heuristics and a machine learning classifier. It contains a large number of embedded links, functioning as a link farm. One of these links points to known malicious redirector infrastructure, indicating a phishing or scam attempt. The file also contains embedded URLs that are part of a link farm, suggesting an attempt to manipulate search engine results or distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffmen.ru/123?utm_term=john+denver+net+worth
    • https://cdn.sqhk.co/xovatapegil/gcopWwb/gopuvasopumuwurosegenoku.pdf
    • https://cdn.sqhk.co/buwowunuras/gqLhbeY/the_impossible_quiz_book_chapter_3_notdoppler.pdf
    • https://cdn.sqhk.co/xemugugafot/WhaM1sT/about_kobe_bryant_death.pdf
    • https://dubiroki.weebly.com/uploads/1/3/1/4/131483307/78376f.pdf
    • https://cdn.sqhk.co/sopiloroda/gdZhhjF/macao_casino_fish_slots_games.pdf
    • https://vajasefa.weebly.com/uploads/1/3/4/4/134490273/78b0b92968.pdf
    • https://dosedupuwosiwoz.weebly.com/uploads/1/3/0/7/130776272/2458983.pdf
    • https://cdn.sqhk.co/malevevipali/Hhhjfpm/vovosanivakaxatoxe.pdf
    • https://cdn.sqhk.co/rapawaferew/gdgjigg/business_management_pros_and_cons.pdf
    • https://cdn.sqhk.co/zubavagi/j6n3Ogf/vitamin_d3_foods_vegan.pdf
    • https://cdn.sqhk.co/wifopuzuxiba/iguehiU/gegumolesidazu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zunaporam/baghban_movie_mp4_hd.pdf
    • https://s3.amazonaws.com/vezumobigodub/jetblue_brand_guidelines.pdf
    • https://s3.amazonaws.com/megujobemegor/dictator_movie_aladeen_song.pdf
    • https://s3.amazonaws.com/tibanepoxilibud/markovnikov_rule.pdf
    • https://s3.amazonaws.com/loneminovu/62952674167.pdf
    • https://s3.amazonaws.com/tujeviwakirawu/morello_cherries_nutritional_information.pdf
    • https://s3.amazonaws.com/pazovugal/mevubabelopad.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019279.bin
d45b9f4d510bdf74249e1fb31d5ddbe979fde31d0f974b05a6c533efd7e526b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19279 4632 bytes
font_01_sfnt_off0001a243.bin
6eeb5195bc4ca4a1c8cb6bb3c65f9c54f6093aedc93a0dd80cd619e42e6e28d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A243 15012 bytes

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