Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ce33d7f078507ec…

MALICIOUS

PDF

70.5 KB Created: 2020-12-27 14:55:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: ee207b6d25eb571c2f6d1d8c8650954c SHA-1: 9f9585c2444a5241560b4d4c9af8413bca8cdb86 SHA-256: 5ce33d7f078507ecab62c38fe9b56de113627d4c38a2cb3071cba99daabebff8
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, directing users to various external URLs, including one that appears to be a lure for downloading game cheats. The presence of multiple Weebly-hosted links suggests a coordinated effort to distribute malicious content.

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.
  • 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://traffking.ru/strik?utm_term=download+game+cheat+idle+shopping+mall PDF link annotation
    • https://biparobotimipus.weebly.com/uploads/1/3/4/4/134498468/wutetefevowiwer.pdfIn PDF document text
    • https://kifobanirijo.weebly.com/uploads/1/3/4/5/134595275/988117.pdfIn PDF document text
    • https://roxowuvunesoneb.weebly.com/uploads/1/3/4/8/134889799/nizede-boburelif.pdfIn PDF document text
    • https://xogazusuguse.weebly.com/uploads/1/3/4/4/134479670/17752c8.pdfIn PDF document text
    • https://lemefiware.weebly.com/uploads/1/3/4/0/134017231/2373350.pdfIn PDF document text
    • https://naforuzutexas.weebly.com/uploads/1/3/1/4/131438024/522d76f7.pdfIn PDF document text
    • https://gixajukixopa.weebly.com/uploads/1/3/4/8/134877082/7311541.pdfIn PDF document text
    • https://wepebagelokej.weebly.com/uploads/1/3/4/5/134583559/6479935.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/a68b4fe5-85f1-4138-807f-78e93b24c84e/chamma_chamma_new_video_song_3gp.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff43e894-1679-4e70-8f36-8c850255a2b4/solving_systems_of_inequalities_work.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/mamod.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c855.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC855 5272 bytes
SHA-256: 5e23aa9f8908a5e13c983521c4f6abc829d4b46568d5c79444f92c9645940b81
font_01_sfnt_off0000da2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA2E 10352 bytes
SHA-256: fdf0fde3ea00544c3181ad73eb73dc6c3cbcd292e50ef984a8a65cd2087d7706
font_02_sfnt_off0000fda9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDA9 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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