Malicious PDF — malware analysis report

Static analysis result for SHA-256 70af03e1aa41896e…

MALICIOUS

PDF

69.7 KB Created: 2020-12-14 17:49:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49bac5b2ed04b43575608784aa3ba266 SHA-1: 5a7d8854d0775dd2a10beed794e51e6cc5b24afc SHA-256: 70af03e1aa41896e6995f6740f1f207fec73ef25e89d83d72471053b84f31ef0
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to 'traffset.ru', which is likely a phishing or malicious site. The document body, though heavily obfuscated, suggests a lure related to 'natural resources'. No scripts were extracted, but the presence of an external URI is a strong indicator of a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffset.ru/strik?utm_term=natural+resources+in+the+southwest+region
    • https://cdn-cms.f-static.net/uploads/4404528/normal_5f9c6b24080df.pdf
    • https://cdn-cms.f-static.net/uploads/4404124/normal_5faa60930f612.pdf
    • https://static.s123-cdn-static.com/uploads/4421058/normal_5fd0821f9de4a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d572b181-7837-4d89-8738-e276e0b25839/wuver.pdf
    • https://uploads.strikinglycdn.com/files/391f9571-2866-4cdc-b6c2-aa81cd73bef0/dexud.pdf
    • https://uploads.strikinglycdn.com/files/840fbd82-d026-4966-b685-d7e1908d7095/robert_d_guillory_ma_famille_d_abor.pdf
    • https://uploads.strikinglycdn.com/files/b33b0d4e-c5b6-482e-b5bd-9b4ebdfd33e0/kerejeza.pdf
    • https://static1.squarespace.com/static/5fc1343bd26ff1194f75a191/t/5fcc2963d235d37878b696a4/1607215460481/cyber_hunter_apk_mod_obb.pdf
    • https://s3.amazonaws.com/bewibiwat/lovestruck_app_hack.pdf
    • https://static1.squarespace.com/static/5fc578f6405d5340f3488c89/t/5fd730dbde5b1220c044aa66/1607938268784/72429965552.pdf
    • https://static1.squarespace.com/static/5fc2e9962bbd74065813b99d/t/5fc571913c6ccf69f3175664/1606775185725/2017_ap_physics_1_free_response_answers_question_5.pdf
    • https://static1.squarespace.com/static/5fc06d09e5c7695ca9994347/t/5fc267a83c02f22b9d5aa67c/1606576041350/amana_heat_pump_parts.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d46f.bin
95d1aaaf473a9c32d4ba044410ebc81fe719e226cc7a3d024d65ee557d174fce
pdf-font-stream PDF embedded font (sfnt) at offset 0xD46F 5124 bytes
font_01_sfnt_off0000e5ee.bin
2953c345cf1285bb3c1aa3fd1b0d4bbc7c95dfcce6c1ff7ca034616971384de1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE5EE 10636 bytes