Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e37c648a049272e…

MALICIOUS

PDF

83.2 KB Created: 2021-05-05 20:00:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5dd4bc9714c21fb15c81c68a0d69487 SHA-1: d5b630d1a714b9c35fb7ab9483fb3bd56fcb9303 SHA-256: 7e37c648a049272eaa90a8c205c57074d907f8dcaee260b9db659e8b4bf87121
156 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing document and hosts a link farm. The embedded URL 'https://ponafet.ru/strik?utm_term=ls+dyna+jobs+in+germany' is a primary indicator of malicious intent, likely serving as a lure for job seekers. ClamAV detection further confirms its malicious nature as 'Pdf.Phishing.Trojan'. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • 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.
  • 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://ponafet.ru/strik?utm_term=ls+dyna+jobs+in+germany
    • https://cdn.sqhk.co/wimiwupo/jricjbI/relative_pronouns_worksheet_for_grade_3.pdf
    • https://cdn.sqhk.co/towevefizub/ccaLv26/34048260122.pdf
    • http://xigosilefonaboj.iblogger.org/63893163985.pdf
    • https://cdn.sqhk.co/noruwotil/if9tw2P/92028691281.pdf
    • https://cdn.sqhk.co/kerutadit/iEdSihi/funny_animations_among_us.pdf
    • http://paxebuli.iblogger.org/55478987514.pdf
    • http://selozufuwadapuw.66ghz.com/94270482559.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://b20aee1f-b1b7-4e4e-be5e-d884e4ece670.filesusr.com/ugd/10e3af_640e0a1daf6c4f2a9c9c521612b2b984.pdf?index=true
    • https://uploads.strikinglycdn.com/files/c0b34df2-7926-473a-84a6-56faae126f10/wilupijexotapuvulaf.pdf
    • https://s3.amazonaws.com/fedufiporara/running_schedule_for_beginners_to_lose_weight.pdf
    • https://s3.amazonaws.com/tedowafomaru/28012391327.pdf
    • https://s3.amazonaws.com/xuzed/stellaluna_book_pages.pdf
    • https://s3.amazonaws.com/mipizaju/what_is_the_origin_of_potato_salad.pdf
    • https://ca483b97-61ac-4196-bca0-6b249c18eca9.filesusr.com/ugd/b27199_6fe7359a5eaa472886bd25c1a0f21f78.pdf?index=true
    • https://s3.amazonaws.com/mogipegi/70676035451.pdf
    • https://uploads.strikinglycdn.com/files/f4782b79-7ee7-4869-b9cb-f0b9ab6cdd79/fimiwalomaxorikumobo.pdf
    • http://raseloxezonavo.epizy.com/flight_movie_dual_audio_480p.pdf
    • https://s3.amazonaws.com/remeranexe/28124874828.pdf
    • http://poxobigijeteri.rf.gd/free_templates_for_invitations_printable.pdf
    • https://0a3c8164-ddd9-4522-8472-457ce31ece15.filesusr.com/ugd/d32f78_72604ed968a9425c97dea908ccd047c6.pdf?index=true
    • https://f568b852-d776-40fc-afde-b4c2ef929a3a.filesusr.com/ugd/2d6fb2_50ff79df48cb4dc185c45be6d9feb503.pdf?index=true
    • https://6448a590-b571-4b71-a9e4-820b8531b153.filesusr.com/ugd/782be2_b1c6ada83db34821b33e146726a265a6.pdf?index=true
    • https://uploads.strikinglycdn.com/files/e6117c4b-220e-4618-8049-3c6e0db389a8/40974143477.pdf
    • https://s3.amazonaws.com/lejivugeleguwod/propranolol_for_performance_anxiety_dose.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000104a1.bin
db267c06b6b61f5fcb20c30d51105bd3c0f912e5eeb30585c501a7aa46c83d50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104A1 5372 bytes
font_01_sfnt_off000116df.bin
b92f3febf3d20a15088d833cc595b05e642e10add2dc09b237fb0eb7bceed85c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x116DF 11852 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.