Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7aa246c4e330a70…

MALICIOUS

PDF

61.8 KB Created: 2020-11-16 13:44:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 7d124272d284ea55173a2558d96b40f5 SHA-1: 5fc8613e65f381b9fc245c40d76661f28d01cb2d SHA-256: e7aa246c4e330a70c5084cef37bafce98c0988badf8216a925860b8e9d946bb1
154 Risk Score

Malware Insights

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

The file is identified as malicious by multiple heuristics, including a critical finding for a PDF redirector link to 'traffine.ru'. The ML classifier also strongly flagged this PDF. While no scripts were explicitly extracted, the presence of a malicious redirector URL indicates an attempt to lure the user to a harmful site, consistent with phishing or malware delivery. The ClamAV detection further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://traffine.ru/strik?utm_term=alfaparf+revolution+color+chart In PDF document text
    • https://repafajekojila.weebly.com/uploads/1/3/4/3/134305679/zebawex_gokerapiketer_visupopat.pdfIn PDF document text
    • https://toxekemugig.weebly.com/uploads/1/3/4/4/134484635/taxedik_rasuje_sapakaginowi_wugoninujozigi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389361/normal_5fa815ede1c85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383568/normal_5f92c901dd1dc.pdfIn PDF document text
    • https://loxazofobel.weebly.com/uploads/1/3/4/2/134265844/1343f7d0c427.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445736/normal_5fa75019cdfa5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368970/normal_5f95f540101fb.pdfIn PDF document text
    • https://xomisugasaze.weebly.com/uploads/1/3/4/6/134680352/8412767.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/lonorufi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df133332-0c9b-4c62-881b-f010a713d24d/texas_railroad_commission_gis_maps.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/pomekowazupogi.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/kideg.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/avatar_game_apk_data.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/36338349598.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/honda_civic_2002_service_manual.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b6b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6B4 4976 bytes
SHA-256: 880ee20836d7cf17de5015b88188e13736949bc0104dadbee06f060fe61783d9
font_01_sfnt_off0000c7ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7AB 10580 bytes
SHA-256: 5858d8ee3722167d22660beabbe4461502729298322cf23720f0fbebea27f9da

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