Malicious PDF — malware analysis report

Static analysis result for SHA-256 6de5f8bec5ce1cd1…

MALICIOUS

PDF

68.0 KB Created: 2021-03-17 14:21:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 06dfe71b72c7c112dc3cc02e2f8672b1 SHA-1: f8b1fbec283547d635d2bea0ddf8bfbfca228f32 SHA-256: 6de5f8bec5ce1cd1a93943720f02a54aa46d634fcdc26f1f09129c16da1e5412
126 Risk Score

Malware Insights

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

This PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan variant. It contains numerous embedded URLs, with at least two pointing to suspicious domains ('lozipotod.ru' and 'matizaw.mywebcommunity.org') that are likely part of a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, suggests a lure related to 'work from home jobs'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wix?keyword=work+from+home+jobs+northwest+arkansas PDF link annotation
    • http://matizaw.mywebcommunity.org/ghazi_book_by_abu_shuja_abu_waqar_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380694/normal_5ff0b77a5cbd6.pdfIn PDF document text
    • http://armlur.space/used_slot_machines_for_sale_las_vegas_nevadaiv50y.pdfIn PDF document text
    • http://sputnews.com/97606692762w8r4g.pdfIn PDF document text
    • http://creditstar-kabinet.com/tubepawepisizitinudogezof2sfzu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455183/normal_600c1eff5d178.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486521/normal_5fda6890f0325.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366639/normal_5ff9817e42200.pdfIn PDF document text
    • http://pefiworawodud.mypressonline.com/60480658626.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/05154f99-ec64-4c72-a8b6-a3c680569bcc/how_to_maintain_slim_body_while_pregnant.pdfIn PDF document text
    • http://luzazawa.rf.gd/12666045310.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34524e7f-8cbb-4ea0-adfb-02750d74c0ea/install_graphlab_python3_anaconda.pdfIn PDF document text
    • http://gipizaz.rf.gd/introduction_to_financial_accounting_coursera_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff579230-6e51-4367-abda-cf0174d73c4d/are_smart_scales_reliable.pdfIn PDF document text
    • http://sokexodine.rf.gd/tawokorujugaxipatelene.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6100611-58cf-45dc-a769-0fc830a5e917/weight_of_nordictrack_x22i.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_off0000cb98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB98 5360 bytes
SHA-256: 2e34b1bc13e40738af850eea6138a7e064697db48ff2aa3a7d80af0eea67816e
font_01_sfnt_off0000ddc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDC0 10868 bytes
SHA-256: fb13698f97c94db1296c7d6c6eae744d022436061b72ace0ee57d813d8edb69d

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