Malicious PDF — malware analysis report

Static analysis result for SHA-256 68030c2e003b50ab…

MALICIOUS

PDF

77.4 KB Created: 2020-11-17 14:33:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 7b55997888f9caeb75f622729025babd SHA-1: 12ad468fe66932010776b8dd00d11cd9e5fc8209 SHA-256: 68030c2e003b50ab0636a109a6867ee181e88d5a94ea0f0f37d5083023f1c8c5
156 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating it is part of a link farm, with numerous external PDF links. The primary URL, 'https://traffnew.ru/strik?utm_term=hard+reset+sony+e2104', suggests a lure related to device troubleshooting. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://traffnew.ru/strik?utm_term=hard+reset+sony+e2104 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4406782/normal_5fa7c576c7fb8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462046/normal_5fa232a3c019c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447278/normal_5fa17eab1635b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413563/normal_5fadfacec4d84.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/digokasawuj-jipamuputevuf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419626/normal_5f9ca6a5e41fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366312/normal_5f8c01e68f10c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380072/normal_5fa3c88788369.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366304/normal_5f8808084bd36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465907/normal_5fb0330685f8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379233/normal_5f930eab5e85e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374021/normal_5f9ccedee1cfc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374688/normal_5fa1be4f761f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384472/normal_5f8ee8ab96d02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483870/normal_5fb29e6627f66.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d7b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B9 5264 bytes
SHA-256: 64a89e8539bfff8f2581bdeec937679de13943af46b3281b786c39a50ebdaba9
font_01_sfnt_off0000e9b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B9 12228 bytes
SHA-256: 0b5941a34415eaa9c10b22827cadd1bdfb735a3e1adcfaae5734528b105759b5
font_02_sfnt_off00011276.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11276 16380 bytes
SHA-256: 2e1dcfa215ff7068e156f9bca6f25e666cb310e753e20272ef9c89573ef626fa

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