Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7207f7b51631fd9…

MALICIOUS

PDF

83.9 KB Created: 2021-05-01 17:49:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ed41636284bf80ca9564d8f0dff2ac88 SHA-1: 2de9ca2be7f8e40a377eba19b8e62ee1d90add6c SHA-256: b7207f7b51631fd9d987d9a2c05f2ec857a1d56b006f23d5580dd7747b7be80c
126 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, flagged by heuristics as a link farm on disposable hosting. ClamAV and ML classifiers also identified the file as malicious, specifically a phishing trojan. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect users to a malicious site, likely for phishing or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xezojetit.ru/strik?utm_term=panasonic+microwave+oven+grill
    • http://jushq.pro/istikhara_dua_transliterationzojax.pdf
    • https://cdn-cms.f-static.net/uploads/4445534/normal_600aa97a4cf43.pdf
    • https://static.s123-cdn-static.com/uploads/4451217/normal_5ff3927cbdd7a.pdf
    • http://dovujaxemedu.mygamesonline.org/libro_aprendizajes_clave_tercer_grado.pdf
    • http://prod-fruit.space/9752062013918a63.pdf
    • https://static.s123-cdn-static.com/uploads/4501660/normal_5fdef1ddb5302.pdf
    • http://wudebakafepi.mypressonline.com/support_vector_machine_thesis.pdf
    • https://static.s123-cdn-static.com/uploads/4454824/normal_5fe1145d774a4.pdf
    • http://lilozekakotelup.sportsontheweb.net/volvo_bus_ticket_format.pdf
    • http://gaxesujite.medianewsonline.com/alice_in_wonderland_short_story.pdf
    • https://cdn-cms.f-static.net/uploads/4474723/normal_604b9cff7b916.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/cbcb486c-d8cd-4430-93d0-cce352fd1e60/la_biblia_serie_espaol.pdf
    • https://2e907eb7-0cdb-46e5-a4de-ff0e34d1b96e.filesusr.com/ugd/7ea2c5_6db2c9adca8348fe8fc2a9c6986b983f.pdf?index=true
    • https://18574fdc-dbe8-4f24-a3f7-ab3d6ff540e7.filesusr.com/ugd/d45bfa_fda19f5983ae44f181314606f9a2b673.pdf?index=true
    • https://uploads.strikinglycdn.com/files/4be28f8e-f4eb-48a9-a8a4-c5079a6d799f/pronoun_worksheet_for_class_1.pdf
    • https://a12a05ab-6462-4855-b086-b0a2a961d6d8.filesusr.com/ugd/2c76f4_190b5647bdde4d5fa57de0b5248c6eb7.pdf?index=true
    • https://uploads.strikinglycdn.com/files/14c8caff-798f-44a6-9fb3-6b5ca0ade3c0/interior_designing_course_fees_in_delhi.pdf
    • https://s3.amazonaws.com/musoxifuvitalo/barc_recruitment_2019.pdf
    • http://bilisedutave.myartsonline.com/68237574823.pdf
    • https://s3.amazonaws.com/vitelitubovuluj/mutesunumas.pdf
    • https://s3.amazonaws.com/xedewofuretujo/cursos_de_marketing_digital_online_gratis_con_certificado_google.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f39e.bin
0b2d40c9dab26746a073e011c8a35a1a1052b2def15935a537b8ca3a348a950e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF39E 5272 bytes
font_01_sfnt_off0001058f.bin
aa634a68d94d11b484bdecc907f9c76141c533e086dd813719029002d719ffcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1058F 11164 bytes
font_02_sfnt_off00012bb1.bin
bc6d684f813ac1c32be8bd0fe15b7813cdddcd900b6f98dcbbe4bb93017ec79b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12BB1 16448 bytes

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