Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ec70c72b7aa7ccb…

MALICIOUS

PDF

59.4 KB Created: 2020-11-10 08:21:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: f0c7b3a8385aa80016c4464525b6bedb SHA-1: 0ab34e5f5ee4be264346b3a68a17b579104188fd SHA-256: 7ec70c72b7aa7ccb65c6dd5c8dad804343f15b7a2b7592618c338e896af2c586
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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 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://traffmen.ru/aws?keyword=geometry+segment+addition+postulate+answers In PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/9265384.pdfIn PDF document text
    • https://mosovokiz.weebly.com/uploads/1/3/4/3/134333023/b021bd5fc.pdfIn PDF document text
    • https://repemigikaji.weebly.com/uploads/1/3/4/6/134608024/5240892.pdfIn PDF document text
    • https://punotajevi.weebly.com/uploads/1/3/4/2/134266109/cc247e9d.pdfIn PDF document text
    • https://duvirimak.weebly.com/uploads/1/3/4/6/134603536/viwonajexowogejaz.pdfIn PDF document text
    • https://ruwadegefanum.weebly.com/uploads/1/3/4/1/134108857/3219567.pdfIn PDF document text
    • https://jojawetoterul.weebly.com/uploads/1/3/4/4/134404105/e9b84c134f.pdfIn PDF document text
    • https://lonunibulitog.weebly.com/uploads/1/3/4/4/134498578/guwijive-rajodafo.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/a05aea15-eb37-486c-b8d4-808753ec8239/the_encyclopedia_of_biblical_errancy.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/nusowasetegetavovuvogexuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4490c7c-dcd4-4c66-8381-19f8c156aa7a/30892453762.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e1b051a-6dd0-4c64-ac3d-cf3ef0459a3f/destiny_2_opening_shot.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_off0000ac74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC74 5504 bytes
SHA-256: b3b5e23698a8cffe67bb1ee53cfb172724bfc467a6db9248f9281c5c3f00776a
font_01_sfnt_off0000bf2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF2E 9800 bytes
SHA-256: 5bcb8a5d9d312fa56fb68c12adc83a222829340e1bb4a2d190aababd539987b2

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