Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dc6e97f75a3b6ee…

MALICIOUS

PDF

70.4 KB Created: 2021-01-11 08:54:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: aa19a69f6869db108b996de8fb3b7e39 SHA-1: 4a2e23e64a99b794c0ebe230a54261a0c8d04840 SHA-256: 3dc6e97f75a3b6ee9b57b8c95d56cacd10fa24e257e4c0eab2fb37495cfd1135
184 Risk Score

Malware Insights

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

This PDF file is classified as malicious by multiple heuristics and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to disposable hosting and redirector infrastructure, suggesting a phishing or malware distribution scheme. The presence of a link to 'traffine.ru' with a 'cheat pou mod apk android 1' UTM term further supports the lure of potentially unwanted or malicious software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffine.ru/aws?utm_term=cheat+pou+mod+apk+android+1 In PDF document text
    • https://cdn.sqhk.co/mofosalamo/JMbyidC/ping_pong_3d_table_tennis_near_me.pdfIn PDF document text
    • https://site-1217839.mozfiles.com/files/1217839/android_9_black_theme.pdfIn PDF document text
    • https://cdn.sqhk.co/wodabumamuv/2sRtjjU/82617621862.pdfIn PDF document text
    • https://cdn.sqhk.co/kewusikata/0ThbhcU/ice_hockey_systems_small_area_games.pdfIn PDF document text
    • https://cdn.sqhk.co/kimamena/GWSjcjf/11272501820.pdfIn PDF document text
    • https://site-1173562.mozfiles.com/files/1173562/38297667850.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460450/normal_5fda47648eef2.pdfIn PDF document text
    • https://site-1166732.mozfiles.com/files/1166732/collecting_data_worksheets_3rd_grade.pdfIn PDF document text
    • https://cdn.sqhk.co/dodazija/t2wgHgd/maryland_civil_war_trails.pdfIn PDF document text
    • https://site-1213700.mozfiles.com/files/1213700/fusaxogawajugalabux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481699/normal_5faf782d1e4bf.pdfIn PDF document text
    • https://site-1173807.mozfiles.com/files/1173807/68873176445.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/dukajevo/gamidirikuxaxebokaxaja.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/bazaar_movie_video_songs_bestwap.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_off0000d798.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD798 5008 bytes
SHA-256: 17679e7b6200058af894fd5cc4c140e1b43080954b48050bda7ddfaebe02e911
font_01_sfnt_off0000e872.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE872 10696 bytes
SHA-256: af26561ad5d4ac864e15a306f015d55e8cb3e8796f77fadc2967a65eaf3e7009

Open this report in the interactive analyzer, or submit your own file for analysis.