Malicious PDF — malware analysis report

Static analysis result for SHA-256 d480ddccd7fe9b0e…

MALICIOUS

PDF

76.8 KB Created: 2021-04-26 20:23:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ca00aa2e9e049fa19158df9ab35f9513 SHA-1: e266ad9200dc477b3a0434214833d992f907252c SHA-256: d480ddccd7fe9b0e2e330fd3b2f7e9452ac73c517b389a7bdfa21fd417d80f3b
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. The primary URL 'https://botokaw.ru/strik?utm_term=what+is+e3+on+power+pressure+cooker+xl' suggests a potential phishing or scam attempt. While no scripts were explicitly extracted, the presence of numerous external links and the ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicate malicious intent, likely related to phishing or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://botokaw.ru/strik?utm_term=what+is+e3+on+power+pressure+cooker+xl
    • https://cdn.sqhk.co/wepigosogo/ia8pgiz/spider_solitaire_2_suits_play_online.pdf
    • https://dutajedi.weebly.com/uploads/1/3/5/9/135964159/7087935.pdf
    • https://cdn.sqhk.co/duzoxibuf/7pbQnjj/11662089314.pdf
    • https://static.s123-cdn-static.com/uploads/4369919/normal_5ff1b544732c1.pdf
    • https://cdn.sqhk.co/nuzinipaz/Cuyhejh/messenger_plus_app_not_working.pdf
    • https://cdn.sqhk.co/togobetof/oyEKQhg/fresh_tri_walmart.pdf
    • https://cdn.sqhk.co/jiluputumusi/iMjjgfj/weed_calculator_cost.pdf
    • https://cdn.sqhk.co/ralapogifur/hjighhV/67191321536.pdf
    • https://cdn.sqhk.co/durotula/hkGuhgD/game_maker_studio_1._4_license_key_free.pdf
    • https://cdn.sqhk.co/gidufulelav/d3F2ghE/space_exploration_mars_rover.pdf
    • https://vajepagipe.weebly.com/uploads/1/3/4/0/134000011/botetabu_botagurigeladoj_viwasit.pdf
    • https://static.s123-cdn-static.com/uploads/4425768/normal_5ffdc75269481.pdf
    • https://wutadesojijemez.weebly.com/uploads/1/3/4/3/134393937/tewiwujuvusafirugiz.pdf
    • https://cdn.sqhk.co/pizibimo/hig9jfJ/38952195880.pdf
    • https://mejekuveko.weebly.com/uploads/1/3/5/3/135392268/7733182.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bajapovogam/lokofafadadosiga.pdf
    • https://s3.amazonaws.com/vufupu/bootstrap_3_simple_admin_template_free.pdf
    • https://s3.amazonaws.com/fowonaxul/92319033694.pdf
    • https://s3.amazonaws.com/vuxalirudidel/41711392352.pdf
    • https://uploads.strikinglycdn.com/files/2d6e6567-0c78-4d59-926b-6e19d99defdc/50045368576.pdf
    • https://uploads.strikinglycdn.com/files/f4e951fe-8b7b-4d30-a566-ddca3b884262/are_jenn_air_appliances_good.pdf
    • https://uploads.strikinglycdn.com/files/87a610b5-59e7-44f2-b864-bf16ca108d4d/what_does_a_and_b_represent_in_van_der_waals.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_off0000ee01.bin
bc43a9e004f4eee83139fc32ac230090b3823eef6a5ff3200cf626f3558aba3a
pdf-font-stream PDF embedded font (sfnt) at offset 0xEE01 5420 bytes
font_01_sfnt_off00010085.bin
04b2b1762f09fa5731e447dd4c3b0285c4c6c75db0ea9ee902a0c76546b840f7
pdf-font-stream PDF embedded font (sfnt) at offset 0x10085 11016 bytes