Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fd206c16c5e5c2b…

MALICIOUS

PDF

91.2 KB Created: 2021-03-22 21:00:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1cc32a48bc7f2809e6a39e14e6f2b6b3 SHA-1: 71ecf5f34294c359f49ce9f246a4cc4d2f47be9d SHA-256: 0fd206c16c5e5c2b0559ee416d756a07ea1cf89c951a36d0cd62fa978efff3b8
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL, identified as malicious by ClamAV and ML classifiers. The URL `https://lozipotod.ru/award?keyword=goldman+cardiac+risk+index+pdf` is likely part of a phishing or scam campaign, aiming to trick users into believing they are accessing legitimate information. The document body, though heavily obfuscated, suggests a context related to 'goldman cardiac risk index pdf', further supporting a lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/award?keyword=goldman+cardiac+risk+index+pdf
    • https://cdn-cms.f-static.net/uploads/4412391/normal_6056a7c894f5e.pdf
    • https://cdn-cms.f-static.net/uploads/4419820/normal_5fdc311a9e0fb.pdf
    • https://static.s123-cdn-static.com/uploads/4502870/normal_5fcb9ba8b7cc4.pdf
    • https://static.s123-cdn-static.com/uploads/4393889/normal_5ffdc7ae78d42.pdf
    • http://nipokaxa.getenjoyment.net/the_blame_game_tour_dates.pdf
    • https://static.s123-cdn-static.com/uploads/4404290/normal_5ffbad76811a3.pdf
    • http://zasazigupat.getenjoyment.net/pezokusewitapakov.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/77f06a6a-3427-4eed-a9ce-e958036c6558/how_many_watts_does_a_17_cu_ft_freezer_use.pdf
    • https://uploads.strikinglycdn.com/files/74fb9387-8130-4d5f-afaa-6c83bc8d87c6/7554860392.pdf
    • https://uploads.strikinglycdn.com/files/1daba12a-aa32-46b7-a1f6-05e804261304/resujanefodu.pdf
    • http://tizexazebubo.atwebpages.com/value_proposition_canvas_book.pdf
    • https://uploads.strikinglycdn.com/files/ada413d4-a43f-4fe8-bd02-37ac56f4d1b4/locke_essay_concerning_human_understanding_online.pdf
    • https://uploads.strikinglycdn.com/files/f8d33e87-d68f-4ebc-a892-a3e4353d82e7/53487027837.pdf
    • https://uploads.strikinglycdn.com/files/1f6eda84-2560-407e-8a25-6dcdf3efeee7/first_grade_math_curriculum_free.pdf
    • https://uploads.strikinglycdn.com/files/7c938a5f-0487-4f55-8ece-f558069f07c3/the_secret_life_of_pets_2_rooster.pdf
    • https://uploads.strikinglycdn.com/files/d103d9ae-c210-471d-9ae9-d00adeacf734/zoxalaritokotadijiju.pdf
    • https://uploads.strikinglycdn.com/files/fbd418e1-a340-40e2-a08d-e29ac9481df9/tozuwo.pdf
    • https://uploads.strikinglycdn.com/files/78c01022-ad21-4d07-83cd-ede64b587ca7/92102057962.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000117c2.bin
e35581718fd75c94f05de51b096a0125e0a6baf58bb145fadb4d7c3a3c051f1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x117C2 5172 bytes
font_01_sfnt_off00012945.bin
152a1e5a648ba41b1fb9b14b2015125cae3e5ae12aab401218d680b84b2b630d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12945 12448 bytes
font_02_sfnt_off000151d9.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x151D9 4324 bytes

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