Malicious PDF — malware analysis report

Static analysis result for SHA-256 30182f7020ebb4f5…

MALICIOUS

PDF

86.1 KB Created: 2021-03-30 02:23:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a2b25c2b293903c1dc3be623da05369d SHA-1: 158412801dfd2c29df7c16249253cc118ea492d3 SHA-256: 30182f7020ebb4f5bf4a8fcb59c460f326a79ddc091f04b73706f5e99fe7dae6
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://crophysi.ru/strik?utm_term=dirt+devil+power+max+pet+brush+not+spinning PDF link annotation
    • http://wide-take.top/95112680784h7usv.pdfIn PDF document text
    • http://keep-travel.com/nujuxibonefukufp65z7.pdfIn PDF document text
    • http://golosa-spasibo.ru/dapazabodof3fn7.pdfIn PDF document text
    • https://cdn.sqhk.co/zimopaji/gjczl20/vuruf.pdfIn PDF document text
    • https://cdn.sqhk.co/desogepupema/hhigihP/31828217476.pdfIn PDF document text
    • https://cdn.sqhk.co/sadirorig/bICR0Lf/movoxaxefolukozu.pdfIn PDF document text
    • http://onlinekartiadesi.com/chithari_therikkunna_kavitha_songbukrs.pdfIn PDF document text
    • https://cdn.sqhk.co/gujipiror/8zN8gfi/bike_racing_free_download.pdfIn PDF document text
    • http://loveantravel.xyz/49019878248l7u0g.pdfIn PDF document text
    • https://cdn.sqhk.co/dogutadova/Eijbhe0/super_mario_bros_3_gameboy_advance_cheats.pdfIn PDF document text
    • https://cdn.sqhk.co/jerivudofin/AjiwtZ0/todo_envio_cuba.pdfIn PDF document text
    • https://cdn.sqhk.co/napoxanu/rYheibo/10161314516.pdfIn PDF document text
    • http://limaxinsto.xyz/tamawovuravamapakikidxa11p.pdfIn PDF document text
    • https://cdn.sqhk.co/gilikomow/iibjhDu/oval_bassinet_sheets_16x32.pdfIn PDF document text
    • http://xozonline.ru/angular_6_formgroup_submitnvxqs.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/69910927-673c-4881-bdf8-3cf465c98871/guvoxazaguwenojumekud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b88e9bdb-7a57-4fa9-8466-2ff4bb4f303e/29598863312.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/60751738291.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/151ce468-b6c9-43c2-a942-01757283a81f/summary_of_brene_brown_vulnerability.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdac7f4b-f1d9-4596-927f-28cc7ccc95fc/gekoxaravevujigavoboka.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/pajogu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4631b12c-ddce-427e-b855-3421a00646d5/motogp_racing_2020_mod_apk_unlimited_money.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/44001778567.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/tirazorepijamebuwini.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_off00010e2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E2B 5732 bytes
SHA-256: b1a1ab93053f68b2ee4068150c5b514e79f40bad9c6a828caec7654c71522f10
font_01_sfnt_off00012194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12194 12076 bytes
SHA-256: 899fc2c4c285e0189709f44a05c7f276c560cf7f36d98b8aa5cff3fe8bae1432

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