Malicious PDF — malware analysis report

Static analysis result for SHA-256 75452a7786a6aafc…

MALICIOUS

PDF

88.0 KB Created: 2021-03-05 22:52:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 203fc9e2d8e6983e1aa32a132dd0171d SHA-1: 5b9dcaf3a19974766c9f026793a0ca98dcda65a7 SHA-256: 75452a7786a6aafc222fb72357363bd66610945375a614c3f9c27520977128c0
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to 'https://zajinet.ru/wix?keyword=proform+gr+80+manual', which is highly suspicious given the file's classification as malicious. The document body, though heavily obfuscated, suggests a lure related to a 'Proform gr 80 manual'. The presence of multiple unknown URLs further supports a phishing or malware distribution attempt. No scripts were extracted, but the overall structure and embedded URI indicate a likely attempt to trick the user into navigating to a malicious site.

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://zajinet.ru/wix?keyword=proform+gr+80+manual PDF link annotation
    • http://ing-jobs-opportunities.com/liftmaster_professional_1_2_hp_keypadhpwbi.pdfIn PDF document text
    • http://yoptan.space/28162606902z28be.pdfIn PDF document text
    • http://tamakar.xyz/429533263208myg4.pdfIn PDF document text
    • http://disconto50.pro/informatica_etl_interview_questions_and_answers2hqjp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413111/normal_6003dbdd7477b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455660/normal_60201510f220f.pdfIn PDF document text
    • http://kismyketio.com/arbily_tws-_t8_user_manualbysc1.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/dudujopixejikug/kotin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a17a0c71-65dc-453d-a529-c68a9159bbab/vetupotilawumo.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/api_570_piping_inspection_course.pdfIn PDF document text
    • https://s3.amazonaws.com/lazesej/hot_rolled_stainless_steel_sheet_in_coil.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/doribefijibibafaxefowoza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75fcf2e3-b37a-4b2b-a3f4-5a903aeb5557/triton_ii_sand_filter_tr100_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b598ef5-099f-4e68-ad6c-07a98fac6870/89552749755.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/matching_equivalent_expressions_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/gazijewevan/pedafevobusosod.pdfIn PDF document text
    • https://s3.amazonaws.com/vefagotoje/apa_referencing_style_2015.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_off00011d7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D7D 5248 bytes
SHA-256: 02a8125dcb13e9b193d01d6dcb9f4345c09902ad55b1754df81a911a7c52d884
font_01_sfnt_off00012f3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F3C 10736 bytes
SHA-256: 94546a7779d62e1e1d4a7ede1e148a39e737aba4d8248fc36d45eaca7814be0b

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