Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c20616d2ba9f084…

MALICIOUS

PDF

79.0 KB Created: 2021-04-04 09:04:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: a15a840aa6ff7b0bf04a75ca7f5ede77 SHA-1: 79472bb8b729c69e22228b3c63a242c0dd7dd0f2 SHA-256: 1c20616d2ba9f084a04e09ac7e2dd2d622b46d7c2fb133ac3443736e4397e13e
126 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it is a link farm on disposable hosting, with a specific URL designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The embedded URL points to a domain that appears to be involved in malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://xajibur.ru/strik?utm_term=2009+lamborghini+gallardo+lp560-4+for+sale PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4467573/normal_60120d9968336.pdfIn PDF document text
    • https://benukozememig.weebly.com/uploads/1/3/4/4/134480731/4839b83071e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380083/normal_604a61b455f54.pdfIn PDF document text
    • http://kapovulup.mywebcommunity.org/drawing_and_painting_for_beginners.pdfIn PDF document text
    • https://xukunuwemixul.weebly.com/uploads/1/3/1/3/131384589/fupujifaxunijog-wovofemozajoki-ninekazisaz-gigibatotofi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462352/normal_60465fb8a9255.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493888/normal_603a58993f02a.pdfIn PDF document text
    • http://fapasevusiledap.mygamesonline.org/27424628917.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474988/normal_605f62d8ea266.pdfIn PDF document text
    • http://nekidifuton.medianewsonline.com/learning_robotic_process_automation.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://aa4c2489-c93b-4667-afab-104bf5323bad.filesusr.com/ugd/8b49c6_171ded8b6fb24cb6a64a1f0f7024cb9d.pdf?index=trueIn PDF document text
    • http://nerezusilanake.atwebpages.com/maytag_neptune_dryer_wont_dry_clothes.pdfIn PDF document text
    • http://wokidomogu.onlinewebshop.net/bujekisovejaseguti.pdfIn PDF document text
    • http://mifedisiso.atwebpages.com/annabelle_hayes_workout_plan.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/phrasal_verb_list_with_bangla_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/dejakuj.pdfIn PDF document text
    • http://gonegexunu.myartsonline.com/fl_studio_12_tutorial_in_hindi.pdfIn PDF document text
    • https://bb74f61c-7045-47bf-9a7e-968101ee373e.filesusr.com/ugd/81ef4b_0bf48e81f400491eb05ec39c40dd10c4.pdf?index=trueIn PDF document text
    • https://d5bea983-5bca-41ba-aae6-6b688785cc77.filesusr.com/ugd/9ec29b_a0bc3f4084164169adbbfe3dff9e0737.pdf?index=trueIn PDF document text
    • http://kaxuwenewutexu.myartsonline.com/zimuwalexapogevaw.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/92408297895.pdfIn PDF document text
    • https://937a8a2d-b41a-4163-aff8-eda6db263557.filesusr.com/ugd/21e6f2_746fd6ed832b456d8d3359bec458d90f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/67161613795.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/wojazowurarakosa.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_off0000f045.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF045 6328 bytes
SHA-256: 666890b33fa9a189cca0dcea453f402328e1629f946a5e7c581ba059c81cbc19
font_01_sfnt_off0001059a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1059A 11684 bytes
SHA-256: fd7433268bf5e0f53aa029496d8086b1a9f9ab4fb0c316052e2a0446dae25e4e

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