Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcbf328a291537f3…

MALICIOUS

PDF

61.8 KB Created: 2020-12-06 01:27:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: ac836bb168de7d41084fd671fa0abf0e SHA-1: b0033bc8a720c1f1ca5a4170e8ed489675b027ff SHA-256: dcbf328a291537f3b3b3e738f341cb7f9825daa2a0dd87a70e0fe797784ab5ee
174 Risk Score

Malware Insights

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

The file is a PDF containing a link to a known malicious redirector, traffking.ru. Heuristics indicate it's a phishing lure, potentially a callback scam, and ClamAV also flagged it as a phishing trojan. The embedded URL is the primary indicator of malicious intent, likely leading to a phishing page or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://traffking.ru/strik?utm_term=i+believe+in+miracles+lyrics+hot+chocolate In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd05a964be903ae6418c16/1606223274139/fruita_monument_high_school_phone_number.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2a873e5c7695ca9a6fc9e/t/5fc4e64e7acac6192a5aba54/1606739536245/pufolerazirat.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/ridozafoj.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/72745235779.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf08b3ca23154c95a2574/1606217877839/how_to_cancel_att_uverse_service_online.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4ecd6084698658e780a93/t/5fcb3099190ee82df8d92028/1607151770728/83445275191.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc00c29085bf90c0ef85582/t/5fc11d187acac6192ae8825d/1606491416672/nfl_rush_2_minute_drill_unblocked.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/12269997835.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/kamudel.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/ibm_security_appscan_standard.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd2e793f44f419c129bf93/1606233727404/punishment_for_violating_restraining_order.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/fallout_4_zombie_apocalypse_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/imitation_game_imdb_parents_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f3bfd6c-2d84-46db-b847-3f9f8f3f9c13/25124615819.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87bf953c-f0f5-4503-b1a3-696f7a9fefd2/guvuzabijanog.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_off0000b811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB811 5280 bytes
SHA-256: 7abfb6d1bc16aa48ee81208612a2637fb9f5cb9c432cf75149efffd75aa5b2f5
font_01_sfnt_off0000c9e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9E0 9460 bytes
SHA-256: 3ba870d837ca8c291ff0dc73a7cea15a6be6329a905d430175879c88c8b10f54

Open this report in the interactive analyzer, or submit your own file for analysis.