Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6493016db325bb6…

MALICIOUS

PDF

66.6 KB Created: 2021-02-13 13:13:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: c922ae38051addd3dee698b600245644 SHA-1: b99c039e1f45364eb7e186485accc2f36c7ffb19 SHA-256: d6493016db325bb6b8966e451413d1d6ad8dc99fc1054f910a099162e2861ca2
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URLs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic suggest the document is designed to redirect users to potentially malicious websites. While no scripts were explicitly extracted, the presence of embedded URLs and the overall structure point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/123?utm_term=physical+science+textbook+9th+grade+mcgraw-hill PDF link annotation
    • http://maslovauto.ru/zipuxi1eowk.pdfIn PDF document text
    • http://4gusevshop.website/cidco_allotment_letter_formatoop2p.pdfIn PDF document text
    • http://pocki.top/zimisitobunevabufufrvi0i.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373776/normal_5feb7a759091d.pdfIn PDF document text
    • http://salufogi.iblogger.org/77438352364.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383695/normal_5fe982e63b96f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472506/normal_5fd3a6cd80a3e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455183/normal_5fdec83c42c9c.pdfIn PDF document text
    • http://lnstagramoriginal.com/affirmative_action_definition8sig8.pdfIn PDF document text
    • http://a1metromovers.com/9027073951n6ej3.pdfIn PDF document text
    • http://afracheat9.xyz/diy_explosion_box_templatesm2q1j.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452389/normal_600500ed65198.pdfIn PDF document text
    • http://women-ita.space/vmware_horizon_client_for_chrome_version_4._78fea7.pdfIn PDF document text
    • http://lawigimik.iblogger.org/watermark_files_online.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tutegijuvejok.epizy.com/cracking_tools_pack.pdfIn PDF document text
    • http://fimageparoxa.rf.gd/embolism_pulmonary_guidelines.pdfIn PDF document text
    • http://setekavapitefe.rf.gd/89136981957.pdfIn PDF document text
    • http://vebaxabono.epizy.com/converting_between_metric_units_worksheet_year_6.pdfIn PDF document text
    • http://tixinova.rf.gd/85283832973.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_off0000c252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC252 6008 bytes
SHA-256: 46c05fb7dcc277a0a130c4bb4786bd952babe07330fa4f5a5c241374ac38eb9c
font_01_sfnt_off0000d6b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B8 10888 bytes
SHA-256: a90265d39abe98df94e364ac356eb839c63623fa1478d335a688ec017c95efad

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