Malicious PDF — malware analysis report

Static analysis result for SHA-256 757e95c9b251648c…

MALICIOUS

PDF

68.3 KB Created: 2021-02-02 07:49:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 7016951f0762ee881b4c36886c9225a5 SHA-1: 30f0d8121dda0a086f2b87c4e694ac8320708b55 SHA-256: 757e95c9b251648c1e088b87cfefc549d1dd727f693084a5584731b379cee63d
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://jottigo.ru/aws?utm_term=android+10+samsung+s9+t+mobile PDF link annotation
    • https://cdn.sqhk.co/fukonovum/hcidjbH/htc_backup_account_login.pdfIn PDF document text
    • https://tapogizixe.weebly.com/uploads/1/3/4/8/134897788/7c983a.pdfIn PDF document text
    • https://xoludebule.weebly.com/uploads/1/3/4/5/134526363/luvox.pdfIn PDF document text
    • https://wotapidedodibi.weebly.com/uploads/1/3/4/4/134475573/6405324.pdfIn PDF document text
    • https://cdn.sqhk.co/lazuxorus/hqgeP8Z/i_wish_you_nothing_but_the_best_quotes.pdfIn PDF document text
    • https://nekemobo.weebly.com/uploads/1/3/5/3/135323096/51188fd8946.pdfIn PDF document text
    • https://nebofubegifeso.weebly.com/uploads/1/3/1/4/131437549/lejeg-zagodoredoba.pdfIn PDF document text
    • https://gilurumujeluzem.weebly.com/uploads/1/3/1/8/131857598/sixejaxosuniwopaxe.pdfIn PDF document text
    • https://doluduzugemuj.weebly.com/uploads/1/3/1/4/131411539/dolud.pdfIn PDF document text
    • https://teraxumafelenug.weebly.com/uploads/1/3/4/7/134747654/zemokovez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408586/normal_5fee022ac9513.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dagajevefud.epizy.com/apply_pan_card_offline_form.pdfIn PDF document text
    • http://nulanajivokavos.rf.gd/barking_dog_video_free.pdfIn PDF document text
    • http://wozojatoxako.epizy.com/arvind_swamy_songs_masstamilan.pdfIn PDF document text
    • http://gizezusofozud.rf.gd/laveveromagedopori.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_off0000cc4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC4E 5624 bytes
SHA-256: ca9aff85f7b05e192e1d8e4105d53ecf3caa2818a4f107d7aebeed1bbfd72807
font_01_sfnt_off0000df52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF52 10920 bytes
SHA-256: a959a960f049db8114980316bd72adcac0c34415b88f4a8db1ffa12bb5025eaf