Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c8d68f588b7f1c4…

MALICIOUS

PDF

71.7 KB Created: 2020-12-23 04:41:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: c545ef27d1d33db079d0f758641e4c6f SHA-1: 00e31c467f2c37e2ab6dba593da0b9cb8e7dd89c SHA-256: 5c8d68f588b7f1c453aa1dff61674b2703bbdfade6687a4f8d05e1b400ae661b
164 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, with one identified as a potential phishing or malware distribution URL. The heuristic 'SE_URGENCY_LURE' suggests the document employs deceptive language to prompt user interaction. ClamAV detection and ML classification strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://trafffi.ru/strik?utm_term=review+anime+school+days+indonesia PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4407102/normal_5f935e25336d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423429/normal_5fa993794a296.pdfIn PDF document text
    • https://wusiparopebabo.weebly.com/uploads/1/3/4/5/134505529/c934eef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415045/normal_5f9cfa459616a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446401/normal_5fdf0cf7b99f1.pdfIn PDF document text
    • https://garupiripo.weebly.com/uploads/1/3/4/3/134386314/8536063.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387052/normal_5fc644f0d811a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379842/normal_5f90b6014995a.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/f67f1eef-3977-499a-8e5e-e486e825abbe/45986578412.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/43796831457.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/472bad03-b728-46cd-b469-75e4cbeaad05/53993247539.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/effb81a9-3d09-4f5a-b8c1-29c7d87a0e33/karapaleburizisefiwedame.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_off0000d8ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8CE 5344 bytes
SHA-256: 722b8cd366e36841b3e11df10f55661c1c2da1c5d9031b4b542d7fc743282827
font_01_sfnt_off0000eaf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF2 11432 bytes
SHA-256: c97e1d26820a52fa5b58722fc1913f14472397cf7df1f291c8384538b0e73ae8

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