Malicious PDF — malware analysis report

Static analysis result for SHA-256 325f6ff62278df6f…

MALICIOUS

PDF

77.4 KB Created: 2020-12-22 19:58:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 1cbc2549ece537afddde2dfa910c7294 SHA-1: e04feddbaa709001ac00a3eae38ec73f919f3f32 SHA-256: 325f6ff62278df6ffbb51dbc24ddcc23b42eeaebcb03f1c0f320ed24ca9dead0
104 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, with a high ML score. It contains an external URI pointing to 'trafftec.ru', which is likely part of a phishing or malware distribution scheme. The presence of a 'download button' heuristic further supports the attack pattern of luring users to download content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafftec.ru/aws?utm_term=autocad+2007++for+windows+8 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408475/normal_5f92ce3533e11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422640/normal_5fd92331e3823.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486565/normal_5fc7fbb074e78.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/jewizopukuni/48827237131.pdfIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/chipotle_order_form_online.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/36260123418.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6db0714e-9b67-40c0-a4ba-831a667247ef/22099984273.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0ee517a-f035-4001-977e-d17a2e53eeb6/grant_cardone_closers_survival_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/1_cm_isometric_dot_paper.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc65d7b5687f52b6ba6648e/t/5fd6eb96dca2215260562fb9/1607920535232/50909854555.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe035f7acac6192a871cb6/1606288224291/buzz_lightyear_spaceship_play_tent.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d032d04-3a34-49c2-89ed-cf344e50537c/danimamonimebafudikut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bcd7b1c-3f9d-4e0a-88e1-0460ae79b99f/motorola_g7_plus_coppel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e64fadd8-7348-4a80-83f0-78799f62ce7d/turks_head_knot_paracord.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_off0000cc45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC45 5612 bytes
SHA-256: 3e7fc058f62a957a0c1918c27853e7d36257b860ee695d66d0413d5cf3e35114
font_01_sfnt_off0000df88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF88 16452 bytes
SHA-256: 82b117d2a353f5a02905023d479817965fffa9eca4c80de4b7012aed516741d5
font_02_sfnt_off000111ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111AB 16132 bytes
SHA-256: d9b012042df5fe8dc074c42eae0f7627b15178249d85eb70dc7afc452d134ec7

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