Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ba49b27464f51b5…

MALICIOUS

PDF

82.2 KB Created: 2021-06-09 15:29:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 2369dc25db0f692fe1238502a31328b3 SHA-1: e8f8e50d27ef250a5ccd86e792c51e4f14279eb2 SHA-256: 3ba49b27464f51b55c46b5a4ab242ee4ec27154be59ad9b25b9fd7a05ccda210
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely to facilitate a phishing or malware download attempt. The document body, though heavily obfuscated, contains text related to the URL's apparent lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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://pistant.ru/pbw?utm_term=trippie+redd+album+zip PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4476767/normal_605b71052f2da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445869/normal_5fcb99dc5d81a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474720/normal_60baa9d851c90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501057/normal_6011a19723740.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445743/normal_5fdc46c02588e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451227/normal_6047fdfe82322.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425908/normal_60013536b83cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369772/normal_6055b3783c40a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375521/normal_605145297ccc4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401546/normal_60317475526ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427499/normal_602eecb93d640.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401712/normal_5ff21062d2e33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393364/normal_605bb3e3b0f5d.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/564b5673-d989-4c01-8eaa-e61f3648d280/solucionario_fisica_y_quimica_3o_eso_bruo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63a32551-390a-44b1-a179-7de321f42012/how_to_sew_beginners.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/341ada34-21d3-49ad-b238-933949df66ca/narrative_writing_prompts_for_grade_6.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2000f25c-0f68-4cfb-a871-bb32b10ef130/dokowe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3042c0a9-6182-4cbe-90bf-5713d69cf2bf/critical_race_theory_in_social_work_education.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03e84282-6c17-4f06-91b6-b5522b97de84/what_do_50_year_old_woman_want_in_bed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15ac6aca-7878-4567-ad59-9a6144a0c198/what_foods_to_eat_on_advocare_10_day_cleanse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/917e9b7d-068e-4f7f-a606-4372c1d1098d/las_cronicas_de_narnia_1_pelicula_completa_en_castellano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0143410-c4f2-443a-b537-ce5f33232b69/nesco_18_quart_roaster_oven_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9eaf92df-bc5b-4277-9130-f29dfa0b9e65/rodoxiwib.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFAF 3024 bytes
SHA-256: 23ffde7597b2b22806272d8111ce434695aa562df4ddf94c5a041dac7759d136
font_01_sfnt_off0000ea7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA7F 4652 bytes
SHA-256: 7ce3801565367ead07b1f30c863d24192176380c20c7aec0ca8ce6e7cf142422
font_02_sfnt_off0000fa31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA31 1800 bytes
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
font_03_sfnt_off000102bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102BF 12380 bytes
SHA-256: 4df2d73cd2c4eca80a6eea98e43975712a2bcbbbd15d9651d4d5a38e9137000d
font_04_sfnt_off00012b2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B2B 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378