Malicious PDF — malware analysis report

Static analysis result for SHA-256 2515421f43b673a0…

MALICIOUS

PDF

78.3 KB Created: 2020-12-29 19:58:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 960fe7ee80c92396db3baad422b2f2e8 SHA-1: 13e25d7dd2c9cc32bab95604216dd08361df581c SHA-256: 2515421f43b673a05bcf603e14df42cd234fd6f5f3ae38be3c0394588e29904f
222 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document contains numerous links to external resources, including a known malicious redirector at 'traffmen.ru'. The document body, though heavily obfuscated, suggests a lure related to 'Super water slide rentals'. The presence of multiple PDF links and the ML classifier's high confidence score indicate a phishing or redirection campaign. The ClamAV detection further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/strik?utm_term=super+water+slide+rentals In PDF document text
    • https://rosanibo.weebly.com/uploads/1/3/4/8/134873488/badonomeb.pdfIn PDF document text
    • https://cdn.sqhk.co/naxopesareg/HLjdXCa/bapibe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/sugaguxagu/wugokatawoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dddf1536-db55-4513-8b45-c5d119e6a43a/munizuveminikibafukomabek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0007fb50-a1b3-456a-8654-02e97ee1b43c/kubisevitusolojiwifoxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b7266eb-fe03-445d-98f4-da667414d0e0/codes_for_pet_ranch_simulator_wiki_codes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/381ad436-fc51-490a-b3c5-428166818e56/85597164408.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4986d962-fab8-4d2b-9a97-1a0f38a1a10a/league_of_legends_roles_mbti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7cfd3fa-1e79-4c11-8deb-1c1072549468/lg_dle3500w_spec_sheet.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e700.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE700 4920 bytes
SHA-256: a2d64f82d571a42ed7576a8c44049c6e9033f704427a7e5d6a1c0066c163a178
font_01_sfnt_off0000f7cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7CD 11328 bytes
SHA-256: 2f9240ff4aa5cd0932dad0b3d77be5295e9275cac7b081333a1c8e9591b29aba
font_02_sfnt_off00011e7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E7E 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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