Malicious PDF — malware analysis report

Static analysis result for SHA-256 40e7daf9d06febad…

MALICIOUS

PDF

46.7 KB Created: 2020-11-05 01:39:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03dd903448363da6ba1200f0c324e7ba SHA-1: 72ea8e15af613739ab4f0ad802fa5ce125bc85b6 SHA-256: 40e7daf9d06febad855f843dd85983b37bb13e54ad3fb7ef9cd454d2b3696d8d
154 Risk Score

Malware Insights

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

This PDF document contains numerous links, including one pointing to a known malicious redirector infrastructure at 'ttraff.cc'. The document body, though heavily obfuscated, contains keywords related to free downloads, suggesting a lure to trick users into clicking malicious links. The presence of a link farm and a malicious redirector indicates an attempt to drive traffic to potentially harmful sites, likely for further exploitation or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://ttraff.cc/123?keyword=robot+games+for+kids+free+download
    • https://mufalugibesenu.weebly.com/uploads/1/3/1/4/131453255/gibowadikufut.pdf
    • https://gegiritofizupog.weebly.com/uploads/1/3/4/6/134644009/susubotipew.pdf
    • https://nazuvunu.weebly.com/uploads/1/3/4/4/134438845/9705e15d09.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/815e54e2-9197-4489-9eaf-b25a13c23e5f/dadus.pdf
    • https://s3.amazonaws.com/wilugugo/tasonatovixalewakim.pdf
    • https://s3.amazonaws.com/lanorolowu/lumber_tycoon_2_guide_kevin_play_lt2.pdf
    • https://s3.amazonaws.com/lijulijowivaze/pageant_of_the_masters_discount_tickets_2019.pdf
    • https://s3.amazonaws.com/jiwisigetizoxif/manual_adobe_audition_3._0_espaol.pdf
    • https://s3.amazonaws.com/naxizugenabi/list_of_html_tags_and_their_uses.pdf
    • https://uploads.strikinglycdn.com/files/cc874758-ed1b-44bc-8e9f-3a2a3522e6f4/vuxatikixamosaxivuvu.pdf
    • https://uploads.strikinglycdn.com/files/cbdf8101-99e8-4221-9911-7562d59b90e6/98776867578.pdf
    • https://s3.amazonaws.com/subud/schma_annot_d_une_cellule_animale.pdf
    • https://s3.amazonaws.com/vonusirukete/buona_beef_menu_bolingbrook.pdf
    • 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_off00006add.bin
fa93336ce55711c8b9fd5d74ed4f3b1dfe571a6f69e570947441084bc0710681		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ADD 5316 bytes
font_01_sfnt_off00007cef.bin
35fb9c829e592c3fd106aca771938eafd773c88cf91227c84e79d46428f457b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CEF 10380 bytes
font_02_sfnt_off00009ffe.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FFE 4324 bytes

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