Malicious PDF — malware analysis report

Static analysis result for SHA-256 093d30c91430f9fc…

MALICIOUS

PDF

65.0 KB Created: 2021-01-24 13:19:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 50b69307add92e2150b19e99fc59c87b SHA-1: d4e4dac22ab531144ce94962c131c4da9ad80b09 SHA-256: 093d30c91430f9fc602c412f93b462bc73727db4be428f947c524f673b68dd07
126 Risk Score

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 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafftec.ru/aws?utm_term=basler+clothing+size+guide PDF link annotation
    • https://vexakoloninabi.weebly.com/uploads/1/3/4/8/134851928/xajobosoj.pdfIn PDF document text
    • https://sitegevom.weebly.com/uploads/1/3/4/6/134664280/bodedubije.pdfIn PDF document text
    • https://cdn.sqhk.co/vuzefoveniri/YXO3jdS/nozotes.pdfIn PDF document text
    • https://cdn.sqhk.co/kepilujofeje/k9Sheid/91073918322.pdfIn PDF document text
    • http://marketeuro.pro/video_x_player_download_for_windows_102z6au.pdfIn PDF document text
    • http://fupodiruza.66ghz.com/arjun_reddy_full_movie_dvdwap.pdfIn PDF document text
    • http://de-bewertung-889562.icu/horizon_credit_union_membershipso3kq.pdfIn PDF document text
    • https://cdn.sqhk.co/suwapipejob/cijiihi/xelesopi.pdfIn PDF document text
    • https://saxunada.weebly.com/uploads/1/3/4/8/134865385/1339355.pdfIn PDF document text
    • https://risegexof.weebly.com/uploads/1/3/4/6/134661868/2952089.pdfIn PDF document text
    • https://xasonametig.weebly.com/uploads/1/3/2/3/132303127/togoluje_pipomofuzo_juxililagoni.pdfIn PDF document text
    • https://fiwerabonu.weebly.com/uploads/1/3/4/3/134347662/3513545.pdfIn PDF document text
    • http://digitalliteracyinstitute.com/fast_lane_racing_speed_racer5co2i.pdfIn PDF document text
    • http://zijimesaxa.iblogger.org/59923076227.pdfIn PDF document text
    • https://cdn.sqhk.co/jirowolad/dftzgh0/democracy_in_america_definition_apush.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vogojitipam.epizy.com/81849771250.pdfIn PDF document text
    • http://borovob.epizy.com/66607113684.pdfIn PDF document text
    • http://rejaromavovelu.rf.gd/applied_ballistics_long_range_shooting.pdfIn PDF document text
    • http://xezepagonozaniw.epizy.com/godefaz.pdfIn PDF document text
    • http://zujopafupo.epizy.com/61778296408.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_off0000c156.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC156 5300 bytes
SHA-256: 37eaf0bbf546063b2e67e398d64683ea3247f7b3a4633e31f9b8a8f69bae7005
font_01_sfnt_off0000d356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD356 10636 bytes
SHA-256: 0aa2c1f2bec51a9ccd8724a295a9c6332790edc9771d7515127b265aacd4754e