Malicious PDF — malware analysis report

Static analysis result for SHA-256 24fdab296ef6c795…

MALICIOUS

PDF

78.0 KB Created: 2021-03-19 22:52:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 138d83ad1e13a5b9d9e98470df35c907 SHA-1: 1c36d618320db67e685ce3be7ed63fe5867c5720 SHA-256: 24fdab296ef6c7955863ec9988548cd4d1e49537a0533e57ef420d8ce7bb77fa
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, appears to be a lure related to a TV show episode guide, aiming to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jumiwimov.ru/123?utm_term=frankie+and+grace+season+5+episode+guide PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4371258/normal_5fe42b2dd46e5.pdfIn PDF document text
    • http://tublitalia.space/mopizelinishp5uo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449000/normal_603e416a64dd8.pdfIn PDF document text
    • https://texosubos.weebly.com/uploads/1/3/4/7/134715033/438981e15e80.pdfIn PDF document text
    • http://tk-pobeda.site/how_to_print_without_color_ink_epson_windows_109fbdy.pdfIn PDF document text
    • https://tofariviviri.weebly.com/uploads/1/3/4/1/134109347/ab351c69.pdfIn PDF document text
    • http://woodbonus.net/rabixutidikisw9525.pdfIn PDF document text
    • http://tb-films.ru/marshall_avt50_valvestate_2000_reviewlpcip.pdfIn PDF document text
    • http://fruit-ita.fun/985680194150vnh1.pdfIn PDF document text
    • http://batut.space/728457081032axg.pdfIn PDF document text
    • https://momewevegugeb.weebly.com/uploads/1/3/5/3/135326076/e012ae7c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503578/normal_604b9c1e255ac.pdfIn PDF document text
    • http://thecet.xyz/movie_maker_free_programotgew.pdfIn PDF document text
    • http://dorightunion.com/rotipozujemonoveribfvqd5.pdfIn PDF document text
    • http://polikarmonolit.ru/irobot_roomba_e5_5150_sale1lkxt.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/sumesawoxajew/60377910031.pdfIn PDF document text
    • https://s3.amazonaws.com/xonobijikivo/bajemijetitikabuxegopek.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/afrikaanse_verklarende_woordeboek_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wobuzisibal/mht_cet_hall_ticket_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a45f53c-1b29-4543-8261-1dbfa8c98bfc/37130036884.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac58c09d-f108-4840-9f40-c3d5271ad862/man_on_the_street_interviews_funny.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_off0000f154.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF154 5352 bytes
SHA-256: 3e1acd08b209cf3705e596b268e53957b8c69df79452edfb484aa7b168f8f8a5
font_01_sfnt_off000103a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103A1 11496 bytes
SHA-256: 477af00d30fa2a5a1a31a2f5c7482270e482488a45b551c02c96e0945901ec53

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