Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa03e8f76aa5a832…

MALICIOUS

PDF

76.2 KB Created: 2021-03-22 03:00:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 4b09dac35974e9f9f95e9e01e878b9a7 SHA-1: 6a1c36d8871e5a3311c5d8540cef1ebd4c38b221 SHA-256: fa03e8f76aa5a83212a1618eb0d46db0ddb9f951de396df83cb01e79c314178c
166 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics as malicious, including a payment redirection lure and a link farm on disposable hosting. The embedded URL `https://soxebez.ru/strik?utm_term=am+i+entitled+for+maternity+pay` suggests a phishing attempt related to financial entitlements. While no scripts were explicitly extracted, the PDF structure and the nature of the heuristics strongly indicate a phishing or credential harvesting attempt.

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
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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://soxebez.ru/strik?utm_term=am+i+entitled+for+maternity+pay PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4482872/normal_603402279fa08.pdfIn PDF document text
    • https://cdn.sqhk.co/mikevoponage/je7chak/31564461495.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472764/normal_6004d6e23a56e.pdfIn PDF document text
    • https://muxorapud.weebly.com/uploads/1/3/4/4/134455491/wifez-mafateluzi.pdfIn PDF document text
    • https://cdn.sqhk.co/zojixemem/ciiO1ij/darksword_armory_review_2018.pdfIn PDF document text
    • https://kajimawujejava.weebly.com/uploads/1/3/5/3/135348493/7407032.pdfIn PDF document text
    • https://cdn.sqhk.co/disegivoji/Ngj5mul/rocket_man_song_meaning_drugs.pdfIn PDF document text
    • https://kajuzenutojaso.weebly.com/uploads/1/3/4/6/134631714/derebefurexuxu-fubanupifonaroz-bebib.pdfIn PDF document text
    • http://navalny.design/do_community_organizers_get_paid5fi8w.pdfIn PDF document text
    • https://rixonusoraj.weebly.com/uploads/1/3/0/7/130738646/gozilunowujevug.pdfIn PDF document text
    • https://dojinutek.weebly.com/uploads/1/3/4/1/134108596/fokulafovogajok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471253/normal_600d6b2a0dd1d.pdfIn PDF document text
    • https://zajebujop.weebly.com/uploads/1/3/4/9/134902249/8588212.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450721/normal_603ec59261b60.pdfIn PDF document text
    • https://cdn.sqhk.co/difanemifal/1dylhpf/blocks_toy_clipart_black_and_white.pdfIn PDF document text
    • https://duvutonog.weebly.com/uploads/1/3/6/0/136020002/rananizavagavev_xorewewudif_notilale.pdfIn PDF document text
    • https://cdn.sqhk.co/tusadopovet/jcEjgHZ/pikotiw.pdfIn PDF document text
    • https://cdn.sqhk.co/zarejesorufo/yMiayZZ/grand_theft_auto_v_the_manual_download.pdfIn PDF document text
    • https://cdn.sqhk.co/dogilijesiwu/b6gc1PE/21356022785.pdfIn PDF document text
    • https://wuselusovofose.weebly.com/uploads/1/3/1/1/131164562/gatemoxoreni-netanemipax-renes-sevopumimodiwo.pdfIn PDF document text
    • http://milanomoda-italy.site/test_headset_microphone_androidv1gje.pdfIn PDF document text
    • http://proita.space/luzufoxeba0mnkn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448346/normal_6026b3154fc93.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ece1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECE1 5100 bytes
SHA-256: b4618d68ee73e92778a390ae595e16e6635eaba18eb5a95dbdf3342d834baffc
font_01_sfnt_off0000fe2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE2E 10824 bytes
SHA-256: 455f13565df46e2221abbd7b828ca5fda4d589be94697c85922fb30266b5477c