Malicious PDF — malware analysis report

Static analysis result for SHA-256 08d2d71c4c02dca0…

MALICIOUS

PDF

77.6 KB Created: 2021-02-20 02:41:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 7459c43e2f17ec8b7526e71a37210a3d SHA-1: df5bb10dad070b90ddee013ce10ecdb11cadb5c4 SHA-256: 08d2d71c4c02dca086455e75c0978202c52cb2856c2b55236d70f714737dce33
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. The document body, though heavily obfuscated, contains text suggesting a lure related to 'self tanner' and includes numerous external URLs, many hosted on disposable domains. The presence of external URIs and the ML_NYX_PDF_MALICIOUS heuristic strongly suggest the file is designed to redirect users to malicious sites for further exploitation or phishing.

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
  • 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://jacksth.ru/123?utm_term=what+is+the+best+cheap+self+tanner PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4480880/normal_602756c66dbef.pdfIn PDF document text
    • https://cdn.sqhk.co/difejekexe/gfJEKih/mlb_shop_promo_code_military.pdfIn PDF document text
    • https://cdn.sqhk.co/xomifinetepi/fcSjhQS/perewiwovimejuda.pdfIn PDF document text
    • http://frontglass.xyz/kitaxu0p58f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497093/normal_600666b8835f0.pdfIn PDF document text
    • http://walkover.me/15894182432nugnf.pdfIn PDF document text
    • http://dukafufuxona.iblogger.org/baking_sheet_pancakes.pdfIn PDF document text
    • http://knitfqph.site/zambian_passport_application_form_south_africa4tmd9.pdfIn PDF document text
    • http://damvglaz2.xyz/answer_hitchhiker_s_guide_423vfes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427267/normal_602949fa23fcf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://magivaxinel.rf.gd/simile_metaphor_personification_worksheet_5th_grade.pdfIn PDF document text
    • http://xolijuvusuv.epizy.com/55155174404.pdfIn PDF document text
    • http://dodixuvizovov.epizy.com/xuketu.pdfIn PDF document text
    • http://megutid.epizy.com/mufugetabifeloxilijatiraw.pdfIn PDF document text
    • http://digopepu.epizy.com/93481102340.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_off0000ed91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED91 5256 bytes
SHA-256: 6efc136c3bffb1bc31f4c48b3803d9ef27610a11b0937a557bf002fa9651a9cf
font_01_sfnt_off0000ff76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF76 11880 bytes
SHA-256: de12b923df928d39f4d8ac7ceae1e0b00c0b9af5f2318b10ee24d2860b9df9ec

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