Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdc138872a04ede6…

MALICIOUS

PDF

74.2 KB Created: 2021-02-28 21:20:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 65437cd7d47c484b143418ee1774a81b SHA-1: dceeae4fc8a8656b35cf4085ce1278c99721a366 SHA-256: fdc138872a04ede69aa2e9236fc3d6f0ed4ac03ed55096c9c416b2232a27774c
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable domains and are flagged as part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, appears to be a lure related to 'mainstays futon replacement parts', aiming to trick users into clicking malicious links.

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://pelibifir.ru/wix?keyword=mainstays+futon+replacement+parts PDF link annotation
    • http://wezotarekexu.22web.org/kadugadigilen.pdfIn PDF document text
    • http://lulopoboxefon.scienceontheweb.net/sword_art_online_alicization_lycoris_patch_1.11.pdfIn PDF document text
    • https://xenuwupe.weebly.com/uploads/1/3/5/3/135329542/lejozepe.pdfIn PDF document text
    • https://cdn.sqhk.co/zukasedu/fjhhbV1/specialized_mountain_bikes_for_sale_craigslist.pdfIn PDF document text
    • http://kasaxeko.mypressonline.com/sims_4_when_does_patchy_come_to_life.pdfIn PDF document text
    • https://pemejugaxopuled.weebly.com/uploads/1/3/4/7/134749032/xuxod-sivawum.pdfIn PDF document text
    • https://cdn.sqhk.co/xemugugafot/FskBQhg/58646814021.pdfIn PDF document text
    • https://cdn.sqhk.co/mujekesire/euRjagf/97129741077.pdfIn PDF document text
    • https://mitigifagoted.weebly.com/uploads/1/3/5/3/135325532/xofijivulukakizedar.pdfIn PDF document text
    • https://cdn.sqhk.co/dofewijoras/tgcahbo/mirrors_of_albion_cheats_android.pdfIn PDF document text
    • http://wemuwetafivaxe.sportsontheweb.net/jevomemulofezepixoxoroj.pdfIn PDF document text
    • http://dusipoweg.mywebcommunity.org/49427688894.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sugexure.rf.gd/zukezojesojureburiv.pdfIn PDF document text
    • https://s3.amazonaws.com/wupuxus/pomedigiwejijudi.pdfIn PDF document text
    • http://lepomosafajuki.rf.gd/miwidizujipobewuge.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/rolapanonujanipil.pdfIn PDF document text
    • http://wenares.myartsonline.com/sinezidiki.pdfIn PDF document text
    • https://s3.amazonaws.com/tasufagijaremo/technically_sound_formal_and_informal_assessments.pdfIn PDF document text
    • https://s3.amazonaws.com/genedesowul/aptitude_test_mcq_with_answers.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e72a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE72A 5268 bytes
SHA-256: 9b34a43c5d0eb2e5622bfb69d5c83f5f3da051b3e2338b0acb37be7051c02a69
font_01_sfnt_off0000f913.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF913 10240 bytes
SHA-256: bb071c45a54ede18c1dbad23b661d10759e89177e10f54b447125e1ed0af41b0

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