Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5a20654656194b6…

MALICIOUS

PDF

83.9 KB Created: 2021-04-03 11:31:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e19c9afffb917e0552702618053a2d6e SHA-1: 1205335d8dbf60fadecdfce829a3516e296be1b5 SHA-256: f5a20654656194b6af371ee62712087dd7e15a46ebe11fe9a26b6a5b1ea666a3
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a primary malicious URL identified as https://mezovovuduw.ru/strik. This URL is presented in a context that mimics a search result for a popular movie, suggesting a phishing or malware distribution lure. ClamAV detection and ML classification strongly indicate malicious intent, likely related to phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://mezovuduw.ru/strik?utm_term=the+devil+wears+prada+movie+netflix PDF link annotation
    • http://mujogatebili.22web.org/6521162303.pdfIn PDF document text
    • http://gakotob.iblogger.org/risk_management_trading.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445745/normal_602730c1871f6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455907/normal_5feb4e1ce254a.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://uploads.strikinglycdn.com/files/4135ee83-fd8a-4133-aff4-f5a421c2244c/soxewowavopuzapolekovo.pdfIn PDF document text
    • https://cccd2283-d272-450a-840b-6541230ebad2.filesusr.com/ugd/5de1df_83f1aa348eac47bf8a31b13ca5203892.pdf?index=trueIn PDF document text
    • https://f16fa5c1-8556-4bba-8f86-04d9c108beb0.filesusr.com/ugd/2c3d75_1c04c06109e44072ba280bfc55502c78.pdf?index=trueIn PDF document text
    • http://kajopulijus.epizy.com/gobefu.pdfIn PDF document text
    • http://biwipekimati.rf.gd/bowflex_xtreme_2_se_workout_plan.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/rightly_dividing_the_word_of_truth_meaning.pdfIn PDF document text
    • https://48e4e0df-78ce-4736-8797-27735e68dc67.filesusr.com/ugd/f3b179_b624f12a4b7b423295c0737645bf8185.pdf?index=trueIn PDF document text
    • https://6c639bf1-704a-4500-b661-329758898742.filesusr.com/ugd/02d620_349ded7610214b3ab27fbec01e2f65ad.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xuzed/what_temperature_should_a_commercial_freezer_be_set_at.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/keturefuwezatumo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d86abcc-b14d-4694-87bc-17693c3fb44a/ghost_tower_of_inverness.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/nonupivufaseje.pdfIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/wujava.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a89cf5da-6982-4003-8480-35c6c4a19ddb/dragon_ball_super_manga_color_descargar.pdfIn PDF document text
    • http://jijazofar.rf.gd/gadup.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/como_convertir_milimetros_a_pulgadas_formula.pdfIn PDF document text
    • https://db6d201d-bdff-4648-9982-d9cfaac7639e.filesusr.com/ugd/98857b_572e3700b7084189883f1f1aebc64576.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/nexitesidawixiwol.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_off0000fc21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC21 5240 bytes
SHA-256: a8ecc9d9aea64be6be1b66cb3eb7a5c79ac2df5cd3a2ff951f9946761a0f586c
font_01_sfnt_off00010dde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DDE 11056 bytes
SHA-256: 64b1282e03c1d3e10de9b64c934b6b4ce846f68dbd624dd9d148ff65dcfcdd2e
font_02_sfnt_off0001338e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1338E 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361