Malicious PDF — malware analysis report

Static analysis result for SHA-256 63b275ede18c4c1a…

MALICIOUS

PDF

67.0 KB Created: 2020-12-17 19:33:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d0fd626a68d38867cd7c3dd70f5f13c SHA-1: d1ed7a29dfcb0cfd5b43cc11f30f70190caf21ea SHA-256: 63b275ede18c4c1ac11c95b326e62810fe4be525077010af6bf569183534872a
156 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing document and hosts a link farm of external URIs. One of these URIs, 'https://traffnew.ru/123?utm_term=bob+drake+1932+ford+parts', is likely part of the phishing lure. ClamAV detection further confirms its malicious nature, identifying it as 'Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0'. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffnew.ru/123?utm_term=bob+drake+1932+ford+parts
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/9ba5f4cee005a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fc389708787e879897c9404/t/5fccb7e0a87f9f1b19d5b2cf/1607251937839/italian_folk_music_free_download.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf065dae50a01458606cd/1606217830309/libewale.pdf
    • https://static1.squarespace.com/static/5fcdf483190b057dd37d5b49/t/5fd7069bab77727176a62589/1607927451055/gatutibapapokugidor.pdf
    • https://static1.squarespace.com/static/5fc0dde4403f5353fd9590af/t/5fc23b76fa04221c716982f6/1606564727396/how_to_bring_a_sim_back_to_life_sims_4_mc_command_center.pdf
    • https://static1.squarespace.com/static/5fc0187aa5bc066edfa15e28/t/5fc1d435e6d49a06bbd5b4a3/1606538295355/23768730401.pdf
    • https://static1.squarespace.com/static/5fc52571d26ff1194f8f7eca/t/5fd63518102ca46975dcf3b3/1607873818056/wazimadetefaworililoxo.pdf
    • https://static1.squarespace.com/static/5fc717bec39fde0238a7ff67/t/5fd1839bac13f65f660bcff5/1607566235717/easy_chocolate_mug_cake_recipe_no_cocoa_powder.pdf
    • https://static1.squarespace.com/static/5fc5b3eee5c7695ca9bc5168/t/5fcedb41caa95a391e5d9e8f/1607392067542/touch_the_wall_app_download.pdf
    • https://static1.squarespace.com/static/5fc5cb6d104edf1d77a2bf71/t/5fcbea5f36758319a561593c/1607199328360/wuxaxagafomutotezo.pdf
    • https://uploads.strikinglycdn.com/files/ba8cb63f-8938-4a40-b041-1e528f87860b/78615160077.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_off0000c983.bin
80837e84854f392248995ab688071ab4ad4e2e3d5f694959c77fa83215f0846d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC983 5760 bytes
font_01_sfnt_off0000dd34.bin
4a6e8f4de46e1b002e55474d180bd678088ace3006019ac7aa9354247aa02e57		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD34 10796 bytes

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