Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eb41a45313d924d…

MALICIOUS

PDF

72.9 KB Created: 2021-04-15 06:42:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 468144d9b739744a0cf22d4d90e947e0 SHA-1: 6ee4ba64216c24b44fa5fe533238ef499bae8ec6 SHA-256: 5eb41a45313d924dd410a24255d3803d98202a82f61f4c0b61309556fc968cb5
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to potentially malicious domains, indicating a link farm or phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of malicious activity, likely aiming to redirect users to harmful content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jacksth.ru/strik?utm_term=best+portable+shooting+bench+plans
    • http://leftoutclub.com/modatujesejubedoxofio2m9j.pdf
    • https://static.s123-cdn-static.com/uploads/4393358/normal_6008ab0a85e45.pdf
    • http://marafonsport.site/4100851061abqai.pdf
    • http://uscreditcheck.info/advanced_excel_video_tutorial_youtubekur1x.pdf
    • https://wewiruvikaju.weebly.com/uploads/1/3/0/7/130775929/6613343.pdf
    • http://wordsidepost.top/saguterute2w293.pdf
    • https://xeziguga.weebly.com/uploads/1/3/5/3/135392729/lipurodoloxi.pdf
    • https://geripipo.weebly.com/uploads/1/3/4/3/134371036/zubomexogizet_nenatanuwego_nemeduze_zajeje.pdf
    • https://fepepifufom.weebly.com/uploads/1/3/1/8/131872298/3e1c3b0768f8.pdf
    • https://voradirara.weebly.com/uploads/1/3/4/7/134744625/8600492.pdf
    • https://jometuke.weebly.com/uploads/1/3/0/8/130874139/e7e97829d1.pdf
    • https://cdn-cms.f-static.net/uploads/4482854/normal_6035b3dddc282.pdf
    • https://static.s123-cdn-static.com/uploads/4369643/normal_60020ca795bd1.pdf
    • https://lulipexo.weebly.com/uploads/1/3/5/2/135294167/vopek.pdf
    • https://nurinakeviwiket.weebly.com/uploads/1/3/1/4/131407921/lofige.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/ccc9f1a7-6ef9-431c-9b94-7fbad5b6bad5/81698987766.pdf
    • https://uploads.strikinglycdn.com/files/2c4cfa6b-f93a-41ab-9d87-fa988483da9d/jopejilogafevalofedul.pdf
    • https://uploads.strikinglycdn.com/files/affa284c-0066-4079-b4d3-d59bc37104a6/which_book_is_the_witcher_series_based_on.pdf
    • https://uploads.strikinglycdn.com/files/447a493a-1320-418b-85d0-dde462dc318c/392797081.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_off0000dcf4.bin
e26063f7c63f7d4a36d4681638057607998a47fbd183d379c47d53d4887f10be		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDCF4 5384 bytes
font_01_sfnt_off0000ef38.bin
070458fdf19d5987de0b7267aa41bcff53778d07109a5f9cbf18b71d0a6660d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF38 10976 bytes

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