Malicious PDF — malware analysis report

Static analysis result for SHA-256 86906ae467a24f39…

MALICIOUS

PDF

72.2 KB Created: 2021-03-01 03:28:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 1a983bce248cccafdb8e279581c95595 SHA-1: 49be0e15d602a12ab7edd91ff97012204bb95960 SHA-256: 86906ae467a24f399474653f8dd000af284d7492b40993182d855553caa1f49a
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a URL that suggests a download for 'worms 3 apk mod', indicating a social engineering lure. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the detection suggest the document is designed to trick users into downloading and executing malware.

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://bologen.ru/wix?keyword=download+worms+3+apk+mod PDF link annotation
    • https://cdn.sqhk.co/rixutixim/uigegdk/xiloxonono.pdfIn PDF document text
    • http://fapasevusiledap.mygamesonline.org/mrs._dalloway_summary.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369905/normal_5fdf237e70995.pdfIn PDF document text
    • http://raxewaponoxiv.mygamesonline.org/how_to_find_dc_motor_torque.pdfIn PDF document text
    • http://fupemagis.mywebcommunity.org/64259192770.pdfIn PDF document text
    • https://cdn.sqhk.co/lusimalifa/iigpjcx/freeciv_port_5555.pdfIn PDF document text
    • https://cdn.sqhk.co/tupizurelir/1jajajj/lathe_machine_operations_facing.pdfIn PDF document text
    • https://cdn.sqhk.co/gutinisiv/ahjhjsj/calculate_percentage_between_two_numbers_formula.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453906/normal_601be32b412e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426820/normal_603aaefad1270.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382186/normal_5ff1042ee15c1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424007/normal_6001434a5c3ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402533/normal_601da94980394.pdfIn PDF document text
    • https://cdn.sqhk.co/bomemenun/eTgjxWG/earl_of_sandwich_motel.pdfIn PDF document text
    • https://cdn.sqhk.co/binebelezux/iengcwM/snake_worm_game_download_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/mejiwimuza/kjfJTk3/skipping_rope_fitness_routine.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383679/normal_5fdb291b3758b.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/wutogugej/drug_handbook_for_massage_therapists.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/52978833552.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/asurion_claim_form_verizon.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_off0000de2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE2E 5424 bytes
SHA-256: 7384a41e6e4d52589eabb220c2614d9fe8849312552a88d387c04c2dc3d4ff25
font_01_sfnt_off0000f0a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A5 10272 bytes
SHA-256: af09342a4db503e622680e8e57ef1596eaac5cf590e4f98a1dad98b32c2f1cd8

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