Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee092ba854d9b32e…

MALICIOUS

PDF

129.2 KB Created: 2021-01-01 08:05:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 9920fb90ff2d39a5b266a51921c39f51 SHA-1: 852e7c8fbdbf0cbfacd07cf5b264051557335b14 SHA-256: ee092ba854d9b32eb3101fa14ce32857190d5b5ccc3b06fc109830e9bbcc96b8
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://cctraff.ru/mozel?keyword=werewolf+side+profile'. This indicates the document's primary purpose is to lure the user to a potentially harmful external site. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a phishing or malware distribution attempt.

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://cctraff.ru/mozel?keyword=werewolf+side+profile In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368246/normal_5fb59e564708f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365634/normal_5f89044fcb9b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384828/normal_5f8def40451af.pdfIn PDF document text
    • https://cdn.sqhk.co/sovokeduseb/iewggoG/jogejasafekiwezosuzopitin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365659/normal_5f8a6551ee95e.pdfIn PDF document text
    • https://cdn.sqhk.co/texekikevow/aiip4ie/fast_drop_osrs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450350/normal_5fe17b3e7fcfc.pdfIn PDF document text
    • https://cdn.sqhk.co/pasepizut/ShjgjeB/skywars_roblox_codes_list.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414701/normal_5fb719e54d606.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404753/normal_5fd77aa7c7653.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/xedobox/jomeguvu.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/asuhan_keperawatan_hepatoma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c06f2a31-f263-4098-b1ec-f3662475a075/bonagosegidopo.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001a6e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A6E8 4928 bytes
SHA-256: 5d4339179812c1d8153e16dac3e597401114daaeb3c90bdcdde04680075b5e61
font_01_sfnt_off0001b7da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B7DA 10556 bytes
SHA-256: 7f305b7bd5503eff2af47a9e70875cd812bc8c81666e04c45018eba714770a1b
font_02_sfnt_off0001dc3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DC3F 17824 bytes
SHA-256: fb6f75d69ad25fb542e57ae99a77aef570f218f52568c8405010137ef3e63a55

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