Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac7a4392113c768a…

MALICIOUS

PDF

38.0 KB Created: 2020-10-28 18:44:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 5786533f54c0b389c19c67edebb8fc68 SHA-1: b07ab6d065c4eb91d0393d70906b0124f3399584 SHA-256: ac7a4392113c768a8d1d7808d42368c89f8fcb2057262aa266403a5ffb449bdc
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://gettraff.ru/pify?keyword=you+look+like+a+movie+lyrics In PDF document text
    • https://babinekisifuve.weebly.com/uploads/1/3/2/6/132696104/megumex.pdfIn PDF document text
    • https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/buwema.pdfIn PDF document text
    • https://lokugejepotag.weebly.com/uploads/1/3/4/3/134318746/1665cc382.pdfIn PDF document text
    • https://gejatovuri.weebly.com/uploads/1/3/1/4/131406669/8217374.pdfIn PDF document text
    • https://bimidupixujeg.weebly.com/uploads/1/3/4/3/134319160/vejelu.pdfIn PDF document text
    • https://mijelowiwiloz.weebly.com/uploads/1/3/1/1/131163856/5054441.pdfIn PDF document text
    • https://pakezumada.weebly.com/uploads/1/3/4/3/134368128/wenid-popewo.pdfIn PDF document text
    • https://guxolufesa.weebly.com/uploads/1/3/4/4/134468064/sevanelivemajiwiwu.pdfIn PDF document text
    • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/kemadifenozegi_dupovema_pukoxapexe.pdfIn PDF document text
    • https://digonowokeke.weebly.com/uploads/1/3/1/8/131856318/6256c6c9760.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/aa955ef3-7351-4857-8e08-170de4acb13e/lilagiduluxuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fdf89b7-c937-4223-aced-84edd47d1724/vifum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69bc9a1e-c14c-4c40-af8d-47b9e9383102/39603854607.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fa5b5e0-fbc9-480f-9547-2dc8bfbd4057/que__a_disponibilidade_geografica.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdbaaea8-35a0-4455-87d0-85bd32981bde/the_egypt_game.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0ae3c2a-e640-4b46-abcd-bbaaa2d31549/anatomy_for_sculptors_understanding_the_human_form_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/965a2352-b733-4925-ac8a-93a96a93289d/keywordfnaf_world_download_gamejolt.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A47 4828 bytes
SHA-256: 36ee3b58a77234cb2a6bdb5b8888b6c773835ee6c8b885183a523441133c1b84
font_01_sfnt_off00005abc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ABC 10104 bytes
SHA-256: 4ed743543c16addcbbb628c07959b8f77cf95bfab6a290ca4f57b92fbf2cd0fb
font_02_sfnt_off00007d02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D02 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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