Malicious PDF — malware analysis report

Static analysis result for SHA-256 2672ab66d74775b2…

MALICIOUS

PDF

76.4 KB Created: 2021-03-28 13:50:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: c9eae98dd70b73d8c995162ba797fb7c SHA-1: c4b4b24c066fea7517147626d567ccb1db3a5c7b SHA-256: 2672ab66d74775b24287125b65c428379c1202cbba1bc097937f7fc952e739c4
184 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains numerous embedded URLs, with at least one pointing to a known malicious redirector. The document's structure and link farm characteristics suggest it is designed to direct users to potentially harmful content, likely for phishing or scam purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=party+racers+2020 In PDF document text
    • http://wokodanib.getenjoyment.net/potumenexelujinib.pdfIn PDF document text
    • http://womenit.space/resetter_canon_ip2770_v1074_free_download1sq5r.pdfIn PDF document text
    • http://1cats.space/ap_us_history_projects7rzo3.pdfIn PDF document text
    • http://mon-compte-cmb.best/how_to_fix_camera_not_working_on_zoomlfhbw.pdfIn PDF document text
    • http://boforotaje.mywebcommunity.org/how_to_treat_blind_pimples_on_forehead.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368999/normal_6059ac1ca63c7.pdfIn PDF document text
    • http://kipegujodup.getenjoyment.net/jblm_main_gate_visitor_center.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418401/normal_5fd98fd0dc13c.pdfIn PDF document text
    • http://unlockdeals.shop/gipajojevejimolot70k0q.pdfIn PDF document text
    • http://pimawusi.22web.org/ninja_professional_blender_with_nutri_ninja_cups.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d0275d90-c5b4-4c72-b581-d0e2b62fc6dd.filesusr.com/ugd/ee54da_7642ace808e34ac3902bf0a56fb8276b.pdf?index=trueIn PDF document text
    • http://zitorosenexof.epizy.com/waxupupelarovonedabotoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b89c94a-f6dc-418f-894a-f70b6984b522/14537878967.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd9912a4-910c-4e2f-a3f1-cf8230d60989/36552099186.pdfIn PDF document text
    • https://d1ee23ee-9ccf-45b0-80ef-1e1ff1f657c4.filesusr.com/ugd/9ef0c3_8513521adb1e4e42b466db6dfad65654.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/12434c85-657f-4d00-858e-4153041d80aa/food_safety_news_philippines.pdfIn PDF document text
    • http://rosajeku.myartsonline.com/the_great_hunt_audiobook.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_off0000ead4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD4 5136 bytes
SHA-256: 10d889c77313a3cf5ede3da9548cc693797daa9376520e0e2480ae81861a3a26
font_01_sfnt_off0000fc5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC5F 11480 bytes
SHA-256: 942d0242c6e61279777dee4d7e22bdc724cbc234a54b5c82449009838dd426fa

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