Malicious PDF — malware analysis report

Static analysis result for SHA-256 00d5dd644520affe…

MALICIOUS

PDF

131.6 KB Created: 2021-03-09 21:47:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c7ebb048c2f694d34287db43e4c3587 SHA-1: e240870ebf73685e1ee4a982951bdb75ed2156bd SHA-256: 00d5dd644520affe0acbd2f0e04dcb46a36ddabc359f77292639ef4c9752fb03
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing campaign. The 'Cadbury world application form' lure in the document body, combined with the high ML and ClamAV scores, indicates a malicious intent to redirect users to potentially harmful sites. While no scripts were explicitly extracted, the PDF structure and external link farm are strong indicators of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 6

  • 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.
  • 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://lozipotod.ru/123?utm_term=cadbury+world+application+form
    • https://rusekawavupor.weebly.com/uploads/1/3/4/0/134096427/498122eb.pdf
    • https://riguzegadediva.weebly.com/uploads/1/3/5/3/135314075/xapagur-zunososodag.pdf
    • https://dikajumexuw.weebly.com/uploads/1/3/4/3/134324924/dapupuj.pdf
    • https://levivododusot.weebly.com/uploads/1/3/4/3/134307397/e615ef890bd1.pdf
    • http://arboozfilm.com/87531167954xzvad.pdf
    • http://worldthailand.fun/cardi_b_live_performance_back_it_uplj2gt.pdf
    • http://wgathering.org/best_daily_devotions_for_dating_couples7wgu9.pdf
    • http://trellos.fun/balagogebixowosejaxozidavfswbc.pdf
    • http://contact-git.top/tazawuvav7s0n.pdf
    • http://zebrait.fun/fanomaf2qtd.pdf
    • https://mufudenufasos.weebly.com/uploads/1/3/4/4/134492520/koduxubezeza-dagabepozor.pdf
    • https://mevavenepid.weebly.com/uploads/1/3/1/6/131637679/lupelujorit_tizidajudorifor_nosapigiwi_penoragok.pdf
    • http://meetsucre.pro/tolijerakojuwamanudomm0hb.pdf
    • http://mikrotikwizard.com/lorutapaniximo8b2il.pdf
    • https://guzajemifuraruv.weebly.com/uploads/1/3/0/8/130874286/e3a073f589.pdf
    • https://davijune.weebly.com/uploads/1/3/5/3/135315517/dinadozasuve-janexep-ponimap-jebobubik.pdf
    • http://sosyaltakipcipanelin.com/tixusepewiboxavuvofifafasgo1bf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://d5cf7a15-73c9-49c9-ad57-d4f0303abb0c.filesusr.com/ugd/0d002d_284dbaa3bea643d9a31190cb98159f2f.pdf?index=true
    • https://uploads.strikinglycdn.com/files/61d8ea11-99ae-45fc-9658-58b3b8ea36b7/klingon_translator_qapla.pdf
    • https://uploads.strikinglycdn.com/files/ab68504c-9c68-4d93-a5dd-b6fc891b1ab6/what_to_do_when_your_garbage_disposal_makes_a_humming_noise.pdf
    • https://bc73a302-93f5-4355-8cc8-485924861394.filesusr.com/ugd/99b222_71a3431ff52b4ea997f1db808309da92.pdf?index=true
    • https://d2d87fd5-5f4d-49aa-ab3c-2263ce4b5d22.filesusr.com/ugd/9169d2_b78c7a69f86a43319a5760dc6894ec6e.pdf?index=true
    • https://ed36ca5d-e6e9-4caf-8bbb-3a8af5cfee16.filesusr.com/ugd/971556_14d361b2b41540daac065d5b1ba7671f.pdf?index=true
    • https://94aa8f26-b07a-4c24-bdb4-4112657565c9.filesusr.com/ugd/37428b_5dff77a1771a4574ae734919161fbc44.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001b876.bin
c9fae766ef570f801394df7211f3f43a6b9d2a8f1fdce35284a6755d45fefab1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1B876 5244 bytes
font_01_sfnt_off0001ca43.bin
6d5da45b8dc3c05e830499cde7a5d023d58bcb7c2485b85e48e20078757d6ad0
pdf-font-stream PDF embedded font (sfnt) at offset 0x1CA43 12084 bytes
font_02_sfnt_off0001f255.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x1F255 4324 bytes