Malicious PDF — malware analysis report

Static analysis result for SHA-256 7743f143a885c439…

MALICIOUS

PDF

71.6 KB Created: 2021-03-30 12:42:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65639a5df748fb56ca1ae31d57555fee SHA-1: dd0294a38fdaa4ef21a3041db38104271a4847ee SHA-256: 7743f143a885c4396655843dbe5857afdcafcdc2cbf91755af7bf77c9ca8fabe
164 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, suggesting a link farm designed to redirect users to other potentially malicious content, such as the PDF found at 'https://s3.amazonaws.com/fokapikow/vixixixe.pdf'. The presence of a download button lure further supports a phishing or social engineering attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://dafemum.ru/strik?utm_term=uniden+solara+um380+vhf+radio
    • https://gekafokolasiga.weebly.com/uploads/1/3/1/3/131384301/9c73147.pdf
    • https://nagugopusoz.weebly.com/uploads/1/3/4/6/134645600/4372512.pdf
    • https://fagadixiridare.weebly.com/uploads/1/3/5/3/135304990/7dd0f6e46152.pdf
    • https://pawagidi.weebly.com/uploads/1/3/1/1/131164052/mezuv_lewobelupasemo_pomumozamug.pdf
    • https://nikizatul.weebly.com/uploads/1/3/5/3/135309179/gederujilezozed.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fokapikow/vixixixe.pdf
    • http://fudogupadi.rf.gd/annamalai_movie_background_music.pdf
    • https://s3.amazonaws.com/fowikorejodi/71313751275.pdf
    • https://uploads.strikinglycdn.com/files/f3a39f37-aac0-476f-9ba9-986e21d2b993/94027059567.pdf
    • https://s3.amazonaws.com/wunupalezozerud/34196439474.pdf
    • https://s3.amazonaws.com/nefunupu/41292483015.pdf
    • https://s3.amazonaws.com/nuselufuzo/21730982629.pdf
    • https://s3.amazonaws.com/tokudapele/xopefarogaziganep.pdf
    • https://uploads.strikinglycdn.com/files/cf5f29cb-6d66-4b55-81e0-3c836bbd2a03/nanobo.pdf
    • https://s3.amazonaws.com/gafedupeba/46026533930.pdf
    • https://uploads.strikinglycdn.com/files/ed4d6e5c-343a-457f-8ff6-678473fec4e3/tozunuweb.pdf
    • http://xadamun.epizy.com/nelsons_ministers_manual_online.pdf
    • http://xuwabofori.epizy.com/pizamanikukiviwidiju.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8c8.bin
030a5393f375c9d2c571df13cf151830ebc6646d759be4de3416ca2ce20d9ce8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD8C8 5700 bytes
font_01_sfnt_off0000ec0f.bin
a741653858ae42eafc3e81cd5bab73370aef4a98fff57458560061e7f1262cf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC0F 10940 bytes

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