Malicious PDF — malware analysis report

Static analysis result for SHA-256 05c4ee84c7307352…

MALICIOUS

PDF

77.2 KB Created: 2021-03-21 21:08:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: a06913ef13e7a29e0230e0957ce5b9ad SHA-1: 7d39743315f3afac197c940dcf63ec639b2c284a SHA-256: 05c4ee84c73073527ad6687bd9dad5c6307165c565e3668e8b8e6cbbc34f12d4
126 Risk Score

Malware Insights

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

The PDF contains numerous external links, many hosted on disposable domains, and is flagged by ML classifiers and ClamAV as malicious phishing content. The document body, though truncated, suggests a lure related to technical support for a Bosch dishwasher, aiming to trick users into clicking malicious links. No scripts were extracted, but the overall structure and URL patterns are indicative of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ponafet.ru/strik?utm_term=how+do+i+fix+e14+error+on+my+bosch+dishwasher PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4482218/normal_6040ba02de892.pdfIn PDF document text
    • https://zunodeni.weebly.com/uploads/1/3/1/0/131070331/vapowaj.pdfIn PDF document text
    • https://durajonuz.weebly.com/uploads/1/3/1/3/131383269/gepilota.pdfIn PDF document text
    • http://bibopasaxuvibu.mypressonline.com/xogejebazur.pdfIn PDF document text
    • https://cdn.sqhk.co/soxoxefumuv/gjicQ1p/73074527743.pdfIn PDF document text
    • http://fuwijumazawad.mywebcommunity.org/adaptation_in_plants_for_class_4_worksheets.pdfIn PDF document text
    • https://cdn.sqhk.co/nuxoporerom/igaIPLW/85952247150.pdfIn PDF document text
    • https://piwifagipob.weebly.com/uploads/1/3/1/3/131379899/koxifefa_jafabupojati.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413978/normal_5fde6e897a9bc.pdfIn PDF document text
    • https://pamenusunawot.weebly.com/uploads/1/3/4/0/134041165/kanodufoxanin.pdfIn PDF document text
    • https://cdn.sqhk.co/nupegefozub/ibnThjn/97007826367.pdfIn PDF document text
    • https://cdn.sqhk.co/kewebogi/hiTifij/berudimip.pdfIn PDF document text
    • https://fuvexowigirupog.weebly.com/uploads/1/3/4/8/134896800/bbc560e9282.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxibila/iicNwgg/90469769600.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/747de771-2e01-4590-90fb-0359ba999275/tarzan_the_ape_man_1981_full_movie_youtube.pdfIn PDF document text
    • http://gevejonitu.onlinewebshop.net/2161_strong_concordance.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/188c9731-dabc-455c-8153-ae610c75b007/sepilisij.pdfIn PDF document text
    • http://mekasesajiw.onlinewebshop.net/24429043730.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca05171c-6419-4d0e-8686-60bacad004fa/hunter_douglas_powerrise_replacement_parts.pdfIn PDF document text
    • http://temodorofeg.atwebpages.com/adoration_saint_sacrement.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_off0000f147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF147 5732 bytes
SHA-256: e724aa067711a5b8eb21ef8d74724e8eed4e7d6f0da9de368b5115294668d6f4
font_01_sfnt_off000104bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104BC 9984 bytes
SHA-256: ee6a09e42c5809f4890e8f73b07eef4b7c4df6c9e94b1981ae0673f821f56480

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