Malicious PDF — malware analysis report

Static analysis result for SHA-256 9132dd2f406c2602…

MALICIOUS

PDF

71.9 KB Created: 2021-05-21 20:02:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 397611808932a674788eb369f4c5bb4e SHA-1: 46c5ffc270abd7e8bc8d17af480a343a20e359be SHA-256: 9132dd2f406c26028b1e77260931f0d1f740599a26fafd1bb9918e62fc16d212
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is likely a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site for credential harvesting or further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jacksth.ru/strik?utm_term=how+to+get+sat+score+report PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4388815/normal_5ff666afdd9de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474218/normal_6041507f9e244.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479942/normal_60527b1157776.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379370/normal_5fe687d089c9f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366400/normal_5ffa311a2fcb6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455183/normal_603c3f8b9f570.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426558/normal_601e1ae4c0c30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368781/normal_606e6aead1577.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/bejexe/83345860940.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0a6782b-94bc-46f4-99c0-66183b90e364/what_does_dust_storm_mean_in_a_dream.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/87323773035.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/military_white_paper_format_example.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2cc6e72-406b-452b-ac86-66edbbc88b22/in_the_mood_for_love_netflix_india.pdfIn PDF document text
    • https://s3.amazonaws.com/kubafezin/speed_queen_dr5_gas_dryer_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/worepafaridokozaze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc1ee274-ea47-4cf0-bd9c-30ebdbf06d7c/sports_facility_business_plan_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a228436-369a-4120-ac50-a4504217b3b0/how_do_i_turn_on_my_t_mobile_hotspot.pdfIn PDF document text
    • https://s3.amazonaws.com/jexijer/1776174786.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/41683707081.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/2018_indian_chieftain_limited_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/88569660690.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/tangled_2_full_movie_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/furunumaroxun/zoxifakot.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_off0000dabb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDABB 5120 bytes
SHA-256: fce6c384208cbcdf536b29f20ec1ec88ba0240ff4005341db4e454acdc7a373f
font_01_sfnt_off0000ec54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC54 10924 bytes
SHA-256: e7e732db206d5cab657cdfb11e3b0c7f6235563d1ffb90e5f7e74fbc4f38c3c6

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