Malicious PDF — malware analysis report

Static analysis result for SHA-256 0180ba6b3875251f…

MALICIOUS

PDF

91.0 KB Created: 2021-03-29 07:16:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: dc25395ed8c931e9751a315405a8599c SHA-1: 578c816864fc4800495469ba64aeb1ce52025874 SHA-256: 0180ba6b3875251f1d4b8aed825b67ee40e1f10bd592e540e47130780f57b448
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://ponafet.ru/strik?utm_term=piebald+miniature+dachshund+puppies+for+sale+in+texas PDF link annotation
    • https://nizevamil.weebly.com/uploads/1/3/2/8/132814567/863f7c.pdfIn PDF document text
    • https://roxabagoxe.weebly.com/uploads/1/3/1/8/131857818/xatezebeleviwu_jisujij_nokejufasamazus.pdfIn PDF document text
    • http://getbuiss.online/6383678652025lam.pdfIn PDF document text
    • https://wipigoxexidon.weebly.com/uploads/1/3/2/6/132682030/wegoliluvobinutigu.pdfIn PDF document text
    • http://natosabi.mygamesonline.org/89298077399.pdfIn PDF document text
    • http://duwudivusupo.mygamesonline.org/43049486325.pdfIn PDF document text
    • http://erogan-encolumbia.site/what_is_the_20_day_oc_challengeafl2c.pdfIn PDF document text
    • http://pumaguli.scienceontheweb.net/chemical_change_and_physical_change_venn_diagram.pdfIn PDF document text
    • http://proita.fun/521605575081j1up.pdfIn PDF document text
    • http://purpless.vip/tp_link_av600_wifi_powerline_extender_manualjuz7q.pdfIn PDF document text
    • https://pujowuvorokom.weebly.com/uploads/1/3/5/3/135347933/5734604.pdfIn PDF document text
    • https://rimekadosa.weebly.com/uploads/1/3/4/4/134467829/xobuzokumenide_tiwod_dajukudobewaduz.pdfIn PDF document text
    • https://taxupolejunak.weebly.com/uploads/1/3/4/6/134663048/35584e7.pdfIn PDF document text
    • http://lightsex.ru/sense_and_sensibility_2008_movie_online9g11j.pdfIn PDF document text
    • https://xuremesedadewo.weebly.com/uploads/1/3/4/5/134500919/bularenawisana.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/mossberg_930_spx_review_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/respironics_v60_clinical_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/kudulotuleduj.pdfIn PDF document text
    • http://zelogano.epizy.com/filezilla_android_box.pdfIn PDF document text
    • http://gosonuvubunevo.epizy.com/schumacher_se-5212a_for_sale.pdfIn PDF document text
    • http://penanaras.myartsonline.com/agroforestry_adalah.pdfIn PDF document text
    • http://sevidimifab.epizy.com/anpadh_film_song.pdfIn PDF document text
    • http://xesunuz.epizy.com/satalabodumudefesaxesus.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/45607425018.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_off000121e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121E7 5604 bytes
SHA-256: 2fd86d0b4008dce35f3c3239a40db8a46607ccdd5f225bcb8b9bce22f01242be
font_01_sfnt_off000134c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134C7 12216 bytes
SHA-256: 55d27098a892b903213c83e3e2984d297d4794132bbe9ea999a0a3289d504a93