Malicious PDF — malware analysis report

Static analysis result for SHA-256 ead2fe0fc3020f9d…

MALICIOUS

PDF

71.6 KB Created: 2021-06-06 17:35:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ae9a0a7ddf28cc8599b2b6912a9cd4fd SHA-1: e1933eb6215d0b14405da8db9095188fcaa5fb04 SHA-256: ead2fe0fc3020f9d8543fbfc4da37f1c0649a42b6d90f408afc98828ec25bd45
186 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing campaign. The document body, though heavily obfuscated, contains text related to 'Gta 5 ifruit app pc download', indicating a lure to attract users to potentially malicious websites. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://garglob.ru/pbw?utm_term=gta+5+ifruit+app+pc+download PDF link annotation
    • https://dutizadip.weebly.com/uploads/1/3/4/8/134889078/rudomobexu-vipinonatej.pdfIn PDF document text
    • https://wipusometava.weebly.com/uploads/1/3/4/8/134846349/sutevojalarov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392649/normal_60523f4844669.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387240/normal_600c1387ad023.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421630/normal_6047f09523ca7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409614/normal_605ba38e376fa.pdfIn PDF document text
    • https://favaruzikab.weebly.com/uploads/1/3/4/8/134871436/zuganoxufodip.pdfIn PDF document text
    • https://zanonolupurezo.weebly.com/uploads/1/3/3/9/133997165/7c0f4b0b9a3.pdfIn PDF document text
    • https://fevobubutexub.weebly.com/uploads/1/3/4/4/134481878/dewoduwolepa_konopev_dogagijawumozev_votize.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374211/normal_6017fcdc80fae.pdfIn PDF document text
    • https://gekowodi.weebly.com/uploads/1/3/5/3/135321574/5118894.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384045/normal_5ffdfc07911ee.pdfIn PDF document text
    • https://naduvita.weebly.com/uploads/1/3/5/9/135973463/joxode-pekuropufarosep-sagik.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485162/normal_5fffab13c1699.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447085/normal_600e0bab60856.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449424/normal_6006441ab700c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f53a5961-cc57-414a-aa42-7c8936be721b/comparative_and_superlative_adjectives_exercises_text.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7aceaf6b-acb5-4f22-b315-1d6b192653d4/98495413214.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/feceb8c5-78be-436e-9393-2c0f435df3ab/active_listening_skills_teacher.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7ef29dd-ff04-4050-aaf8-b5aebc6085d2/how_to_remove_stanley_sliding_doors.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bb619f6-7741-42ba-8bae-c8ce3c3e7e7f/hp_pavilion_dv6_battery_original.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_off0000d94a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD94A 5216 bytes
SHA-256: e8dc2609b9f5e8e7ce855ac8f6f896a3b423c902ad17c7d7910cd0133bfb272f
font_01_sfnt_off0000eb35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB35 11452 bytes
SHA-256: a23850ee782ad6f1860a631879495ed91bacd6d27edb05af4839dae683c1a1c1