Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fd924fed67cc7c0…

MALICIOUS

PDF

77.8 KB Created: 2021-05-28 07:16:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 29ab14ae8b805cb0f736300b995f71c9 SHA-1: 7609b6f02e5d9d34da60826fdf6aee6255d6e399 SHA-256: 5fd924fed67cc7c02b040f608be4625af20912905288822c4dc92c32470c3426
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a link farm with numerous external URLs, including one pointing to 'https://gimoguvi.ru/strik?utm_term=2006+honda+foreman+500+es+parts', suggesting a phishing or SEO manipulation tactic. No scripts were extracted, but the PDF structure and embedded links strongly suggest it's designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://gimoguvi.ru/strik?utm_term=2006+honda+foreman+500+es+parts PDF link annotation
    • https://juwarojolajekol.weebly.com/uploads/1/3/4/1/134108785/katofin.pdfIn PDF document text
    • https://wiworixoso.weebly.com/uploads/1/3/4/3/134321663/tepatavujumuro.pdfIn PDF document text
    • https://pimujupaz.weebly.com/uploads/1/3/4/4/134440235/raxor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367912/normal_602fade54adb5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488137/normal_600be17280f14.pdfIn PDF document text
    • https://wipiwabe.weebly.com/uploads/1/3/4/4/134438476/gubufap.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457881/normal_5ff8ef1837858.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490725/normal_606114518a3e6.pdfIn PDF document text
    • https://sibujoxosuzeru.weebly.com/uploads/1/3/4/4/134499285/1480001.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446770/normal_604f52cbba47f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497348/normal_601c6ef485077.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380705/normal_603ed7a59e5e7.pdfIn PDF document text
    • https://bawenijujobafo.weebly.com/uploads/1/3/4/6/134670929/gisizidunuroj_jufegabovizid_sadafokelu_bumoxus.pdfIn PDF document text
    • https://wupovejiti.weebly.com/uploads/1/3/2/8/132814541/6326389.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402503/normal_602235379d8fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410702/normal_604d2eb138ad7.pdfIn PDF document text
    • https://noxazifegem.weebly.com/uploads/1/3/4/5/134596672/36baaa157a92b3.pdfIn PDF document text
    • https://bosogafowobalo.weebly.com/uploads/1/3/4/6/134614472/bf705ef9331f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/be44948b-a665-45c8-8e26-b34cf5992e0f/sunavexuxekabuvitugemixar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6062d6d1-8f20-4847-bd84-6933fb4d4e64/tezilugejigumofiwuvuximug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5670bb8d-a26d-48c8-9e88-b877c002f1db/tomumavupupu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a1d37f0-70d1-43a2-8f1e-ec8ce408230a/what_does_george_say_before_he_shoots_lennie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e53a9081-7323-441a-af2c-5ee65addf53e/electric_go_karts_for_adults_cheap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd2fc66b-f7a3-498d-bec1-06313fca7d33/how_to_connect_iphone_to_brother_mfc_printer.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_off0000f37e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF37E 5704 bytes
SHA-256: 4fdb266acb6fa5086f804c5c26dddee6793510cbd7ba6049e00e9e295b4aa0aa
font_01_sfnt_off000106c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106C2 9848 bytes
SHA-256: 494907813ee0448471545a65a05f6ef71282ceb84613a06807f0007fd0df272d

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