Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea4a6c02c9651376…

MALICIOUS

PDF

68.1 KB Created: 2020-11-13 12:31:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 11cbbcfe5dbc511eb815cd01255bb0a4 SHA-1: c2e5aff8fc07244df0ddff0a64272f36af321d7f SHA-256: ea4a6c02c9651376d8c7a972c3ee2ed4c5d65a03040158c91565db8d03efaf3a
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://ggtraff.ru/aws?utm_term=cape+cod+fly+fishing+guides In PDF document text
    • https://cdn-cms.f-static.net/uploads/4454048/normal_5faa6ee4818b1.pdfIn PDF document text
    • https://vewusijonaw.weebly.com/uploads/1/3/4/4/134489037/pulujeba_bebatodugor.pdfIn PDF document text
    • https://judorobizud.weebly.com/uploads/1/3/4/4/134455398/5299150.pdfIn PDF document text
    • https://folatidaxewurel.weebly.com/uploads/1/3/4/3/134317863/94d769d2c6e77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418001/normal_5f97e77c6ea07.pdfIn PDF document text
    • https://xawiwewediwo.weebly.com/uploads/1/3/4/0/134017039/069f0e45b072481.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/keralaxutire.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/mitosis_vs_meiosis_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/the_league_quotes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc02e665-c9ae-4a01-accb-6c7275d6ceed/pipozizix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f7f5380-4185-447a-8fcd-c4cdfdb7e38e/95753632629.pdfIn PDF document text
    • https://s3.amazonaws.com/pukasojalu/51323349299.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f2e0f66-bfa9-4029-aa9e-88474df34e5a/cranium_cards.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_off0000ccdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCDD 5328 bytes
SHA-256: 1542cbf77ebf011bbb5fa0a8ae79746c0b35596c5697d0198744f879d8fca549
font_01_sfnt_off0000df0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF0C 10616 bytes
SHA-256: a8947fda6aaf607ce7af92c53c91e35371c4dad67d020fa9302f4c3a36ec13c0

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