Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cac9401804f05be…

MALICIOUS

PDF

80.4 KB Created: 2021-06-11 02:54:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: efbf900031f45ba9bb87c8d7e2de205e SHA-1: fda07cb316cbd5b195ab597acbbad0c426cbd680 SHA-256: 0cac9401804f05be6dedc0bdce5adff55510ad6e3c058f4063563d2b96112bc8
126 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for an external URI pointing to 'ponafet.ru', which is also listed as a URL. The document body contains text related to a movie download, suggesting a lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution via the embedded URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://ponafet.ru/123?utm_term=aegan+tamil+movie++720p PDF link annotation
    • https://nusomosuguxapo.weebly.com/uploads/1/3/4/6/134693055/xugeziwumarifelamo.pdfIn PDF document text
    • https://bobuwazubugomu.weebly.com/uploads/1/3/4/4/134494734/7a69af76d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413012/normal_604e7cc9f1f03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411922/normal_60388e400abfe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473619/normal_5fd1cbeb2db71.pdfIn PDF document text
    • https://sotezogurew.weebly.com/uploads/1/3/2/7/132740991/sibebesazu.pdfIn PDF document text
    • https://jiwadurator.weebly.com/uploads/1/3/0/7/130776405/zaramiguridukobogep.pdfIn PDF document text
    • https://nunigagajil.weebly.com/uploads/1/3/4/7/134751499/9125025.pdfIn PDF document text
    • https://jazigibebegada.weebly.com/uploads/1/3/1/6/131606339/4039383a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456982/normal_606300b1a2884.pdfIn PDF document text
    • https://wubajepetodol.weebly.com/uploads/1/3/1/6/131606368/jejofozube_kakufatuleme_nijabutevo_rosotovugik.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/89fc9e3b-7d6f-4ae5-aa8d-e2b0811152e7/kitchenaid_superba_oven_cleaning_instructions.pdfIn PDF document text
    • http://sodopateduke.pbworks.com/w/file/fetch/144424761/descargar_libro_diario_contabilidad_excel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0e4c46c-87b0-4413-8240-fab695de71a3/80535233095.pdfIn PDF document text
    • http://finatin.pbworks.com/w/file/fetch/144566928/how_the_earth_was_made_video_worksheet_answers.pdfIn PDF document text
    • http://lifelekufa.pbworks.com/f/levipi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8b204ce-3877-4872-80ce-9e6d5a415970/jujajemisabilufexituveku.pdfIn PDF document text
    • http://jeselivid.pbworks.com/w/file/fetch/144490035/how_to_be_a_pnp_police.pdfIn PDF document text
    • http://pisaxolakek.pbworks.com/f/puxuvogudodujavatunem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6dbcb818-b68e-4f48-8526-cba3eca80e97/7935803138.pdfIn PDF document text
    • http://lomexalipele.pbworks.com/w/file/fetch/144529881/morajubutuwaw.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000daab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAAB 5268 bytes
SHA-256: 21a1f019964243f156c2cb389fe10d539a828c9cf8a3192e5af38485ab8f493d
font_01_sfnt_off0000ec9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC9C 2696 bytes
SHA-256: 3ea80387991974feea5175b501408a9828da4a66770f77fe57c4c7ff6fe7a288
font_02_sfnt_off0000f7e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7E8 10876 bytes
SHA-256: 0322d66d3635a3339a7313e9e0a22c101ca625f5f74fb8dbb5242de8f5fb53fa
font_03_sfnt_off00011cf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CF7 16164 bytes
SHA-256: 6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3