Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4cc3187c9f3c90c…

MALICIOUS

PDF

82.0 KB Created: 2021-04-11 05:05:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 29f38fd2a2074fefd110e62423034220 SHA-1: 7d3fa0af4fabb6531db14b1e77bb6aa3e109c08f SHA-256: c4cc3187c9f3c90ce08572a43aa503330b43d015f90633bd10f1f12522092cbb
186 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The presence of embedded URLs and the overall structure point towards an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=how+to+setup+elgato+hd60+to+switch PDF link annotation
    • https://vosuzupitozom.weebly.com/uploads/1/3/5/3/135313705/bitagokaz-ganobeve-duminogak.pdfIn PDF document text
    • https://zajuzazoni.weebly.com/uploads/1/3/4/8/134891144/gurusi.pdfIn PDF document text
    • https://cdn.sqhk.co/dozawulu/jg6bgiv/powulipopepaniterazajo.pdfIn PDF document text
    • https://tudexabi.weebly.com/uploads/1/3/4/7/134770635/7647499.pdfIn PDF document text
    • https://wimelavejitovuv.weebly.com/uploads/1/3/4/5/134597731/2dfbbd63402c8f.pdfIn PDF document text
    • https://masudokunu.weebly.com/uploads/1/3/4/7/134731157/9999b.pdfIn PDF document text
    • https://zelelifejoba.weebly.com/uploads/1/3/4/3/134321633/vibanowogavawubi.pdfIn PDF document text
    • http://raisinslabs.club/72952768675t9xj5.pdfIn PDF document text
    • http://euromarket.pro/mayport_princess_fishing_reportq4vcz.pdfIn PDF document text
    • https://powipopes.weebly.com/uploads/1/3/1/4/131406611/4037339.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417652/normal_5fe599b964b83.pdfIn PDF document text
    • https://wuvotawek.weebly.com/uploads/1/3/4/8/134872633/7d81d6df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425504/normal_60385ae81f7a0.pdfIn PDF document text
    • http://centerverifybadge.com/homelite_super_2_chainsaw_carburetor_kitunwo0.pdfIn PDF document text
    • https://cdn.sqhk.co/gimamebudog/dVAicia/putotemizoxitulojezaresam.pdfIn PDF document text
    • https://widijozitumude.weebly.com/uploads/1/3/4/6/134688085/2370035.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489598/normal_6025827d8118e.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/fedufiporara/valivatowekiriratexifun.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/tropico_android_apk_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/sort_worksheets_in_alphabetical_order_excel_2010.pdfIn PDF document text
    • https://s3.amazonaws.com/wutisigila/xadipuz.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_off00010248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10248 5588 bytes
SHA-256: 453a31a9eec8f10a8a15ed9c8e7b900a5dbbbdb6121a391cd8783f1daed223a8
font_01_sfnt_off00011559.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11559 10732 bytes
SHA-256: e7110ee92d1465c02431e7d622f6a9b27bf58d6ba7fb698d33fb0be5b8053c97

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