Malicious PDF — malware analysis report

Static analysis result for SHA-256 048f3f2bb6813609…

MALICIOUS

PDF

91.0 KB Created: 2021-03-08 13:54:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 7d80d91fb78b75dfc815975ab8a3c0b4 SHA-1: ea3560829cc3e61730ce933bc9e593c98e48973c SHA-256: 048f3f2bb6813609f83c029bd5f7dff2de1b166174788f417f55750886e33ff1
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan threat. It contains numerous embedded URLs, many of which point to disposable domains and are likely used to distribute further malicious content or conduct phishing attacks. The document body, though partially corrupted, suggests a lure related to drawing tutorials, which is a common tactic to disguise malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://botokaw.ru/strik?utm_term=how+to+draw+a+realistic+rose+step+by+step+for+beginners PDF link annotation
    • http://vizionsmc.net/7119055314p7euj.pdfIn PDF document text
    • http://0fruits.space/tovamiraravopukeduwogifh733n.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416666/normal_603f675b56a1a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423133/normal_5ff95f88e66d4.pdfIn PDF document text
    • http://housefashion.ru/kajutexebesoferizowamab08iti.pdfIn PDF document text
    • http://levelupguild.com/fanilakovafofemuga0lax.pdfIn PDF document text
    • http://kuboduzuke.mypressonline.com/ashrae_handbook_2019.pdfIn PDF document text
    • http://help-business-media.com/93461734469z1jc9.pdfIn PDF document text
    • http://mavito.online/92668954335kuyaw.pdfIn PDF document text
    • http://kopuvimu.scienceontheweb.net/what_is_ethics_in_philosophy_essay.pdfIn PDF document text
    • http://20970907.net/1957944674592o7c.pdfIn PDF document text
    • http://garderob-podolsk.ru/american_megatrends_bios_hidden_menuqj9ma.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://muzulozak.atwebpages.com/a_brief_introduction_to_fluid_mechanics_student_solutions_manual_5th_edition_download.pdfIn PDF document text
    • http://rodujuvutadaxam.epizy.com/38405799636.pdfIn PDF document text
    • http://jalijoruki.atwebpages.com/how_many_carbs_in_burger_king_medium_onion_rings.pdfIn PDF document text
    • http://kosezofejesuxef.atwebpages.com/87095516533.pdfIn PDF document text
    • http://fopalemominito.epizy.com/merakatagerakurekatad.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/14275872545.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/gebupuxifutobav.pdfIn PDF document text
    • http://jusowegakero.epizy.com/king_size_platform_bed_near_me.pdfIn PDF document text
    • http://fifomivosa.rf.gd/29884571722.pdfIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/indonesia_tourism_industry.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001175e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1175E 5408 bytes
SHA-256: 96d7d44543ef6dafb9cdf2a4458656cacfa8970923d29d4d981de45c805493d5
font_01_sfnt_off000129e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129E2 10960 bytes
SHA-256: 171d33f2ba647baebbd99f6e354b9fc053b8067fb39310d971ead54e24e28247
font_02_sfnt_off00014f6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F6F 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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