Malicious PDF — malware analysis report

Static analysis result for SHA-256 c962340b8f56fb1c…

MALICIOUS

PDF

73.6 KB Created: 2021-03-02 02:51:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: d7d235ab4ef28d36dda195c0980308dd SHA-1: a47faad3d22dde30195558c0ca6924b5351202d0 SHA-256: c962340b8f56fb1cb9cfd38ea74f77a4df18c1637707def9bbe91f3bf27c62e2
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely as part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to a game search query.

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://nipisod.ru/wix?keyword=dog+fight+2+unblocked+77 PDF link annotation
    • https://cdn.sqhk.co/kufalavoxig/1Ddteda/lumajivivafobujaxeliz.pdfIn PDF document text
    • https://cdn.sqhk.co/xuwutiro/cjOw6ic/54615084235.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448746/normal_6002b66b1f426.pdfIn PDF document text
    • https://cdn.sqhk.co/janezewufaj/gfaieiu/jegadajufapalodibofiset.pdfIn PDF document text
    • https://cdn.sqhk.co/vafegijateno/haifmbJ/nogonototidaxolikoveforu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386076/normal_60289c23afafc.pdfIn PDF document text
    • http://busibear.com/drift_cup_racing_crazy_games4ycg6.pdfIn PDF document text
    • http://instapriz24.site/nuvizewukhbsls.pdfIn PDF document text
    • http://osummer.space/exercises_reported_speech_4_esozf204.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/tamobalasu/sandisk_mp3_player_bluetooth_pairing.pdfIn PDF document text
    • https://s3.amazonaws.com/fuvidokibet/zolekimoxega.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/doragitorewejasur.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/sds_safety_data_sheet_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/the_boy_in_the_striped_pajamas_book_questions_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/tirimofufemukat/intermediate_vocabulary_test_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/what_star_is_brighter_than_the_sun.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/sears_craftsman_radial_arm_saw_table_dimensions.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/why_wont_my_heater_turn_on_in_my_house.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/terilolodinapanupaji.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_off0000d6e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6E5 5096 bytes
SHA-256: 32f68c231519bfc4290d27615d2cc5420d4f4da8cb6f6612b48a8ada50f0ed84
font_01_sfnt_off0000e845.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE845 10120 bytes
SHA-256: c8d3be08044eb4405d9a8e6b4d45e499c2a9f339a6784480d23a7ea7870749dd
font_02_sfnt_off00010ac8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AC8 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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