Malicious PDF — malware analysis report

Static analysis result for SHA-256 4432c34a9e4e3707…

MALICIOUS

PDF

71.3 KB Created: 2020-12-16 17:37:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 29095f5898d2d958714714447a5aa6e0 SHA-1: 757ff8de6686e3b9497185c589e17ef9ec066ed2 SHA-256: 4432c34a9e4e3707c39157ef6a5589a82cadc21e7d1071b2ce1689d466e4ea90
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, with the latter identifying it as Pdf.Phishing.Trojan. An embedded URI points to a suspicious domain, trafffi.ru, which is likely used to host a phishing page or distribute further malware. The document body contains text related to live sports, suggesting a lure to entice users to click the malicious link.

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://trafffi.ru/strik?utm_term=copa+mundial+en+vivo+gratis PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4425507/normal_5fc3ad20736fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469847/normal_5fac40ce5bed5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gazijewevan/helm_s_dike_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/ascended_food_guide_gw2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e57be614-7370-4823-9f8a-57a6f791ae84/pampered_chef_manual_food_chopper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45e2248f-6a9f-4ded-a780-52ea2436627f/minion_rush_hack_version.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6666e27a199023adae7b0/t/5fd6fb5eb1c3f31c7a97cef9/1607924575278/applied_physics_letters_ms_word_template.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5947bc6d964583641de38/t/5fcb1a220814be4f73e3dd76/1607146019619/bride_dress_up_game_royal_weddings.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a91aec8-0a40-4881-9f11-c59827cec161/block_the_pig_world_record.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fceaf3398933a011273b28b/t/5fd155a83f64d4010ccd29c8/1607554473362/map_castle_for_minecraft.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fba09641-97eb-4568-83f1-28de0a1360e7/wonder_core_exercise_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/mobevomedekararef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1af14239-7404-4ffc-9088-ce1c97977e12/call_down_the_hawk.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c987.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC987 5244 bytes
SHA-256: 1541ec9cf27eabb1fe3e10cca7dcf45309f6f89aeb451d485db7b257e20a3eb3
font_01_sfnt_off0000db4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB4B 11608 bytes
SHA-256: d3cad14c27c415352c2e47eae9ca010a5c1ff4e4877a6ccf4242e63a15be9a9c
font_02_sfnt_off00010103.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10103 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e