Malicious PDF — malware analysis report

Static analysis result for SHA-256 127b2a20eb3b0717…

MALICIOUS

PDF

70.6 KB Created: 2021-05-20 08:56:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: fb25aa40f8a0e092201cff0161e5978c SHA-1: 2128f0b962dbc75c86f0778786be470a88bc4f90 SHA-256: 127b2a20eb3b0717b83992391e70901927a753669738ea66db929e98ecd9b33c
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a critical heuristic firing for PDF phishing. It contains an embedded URI pointing to a suspicious domain, which is likely used to deliver a malicious payload or conduct phishing. No scripts were extracted, but the PDF structure and embedded URI suggest an attempt to trick the user into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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://xezojetit.ru/strik?utm_term=contemporary+linguistic+analysis+answer+key+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380078/normal_6021c3dec08c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421354/normal_6059ea577d751.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444371/normal_6027947d87a20.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382638/normal_60014ab084325.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475389/normal_60338236bb2eb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369779/normal_5fce79aaf2ea4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460690/normal_6030307475573.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462046/normal_5fd6a6cd2aad8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422893/normal_6059058a1f61b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382952/normal_600a21453775c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454290/normal_6014a5aae2abe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/gta_v_assassination_stock_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/13899084545.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/compare_and_contrast_words_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/bufexa/aimbot_apk_free_fire.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/wovumev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25c88674-417f-4c7c-8b24-2b4c996b4326/79343232453.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/enchanting_minecraft_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/53235097384.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc5584cf-1026-49f0-adfc-61f3a77f69d7/zusofox.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/jaduxanudifogawuropo.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_off0000d521.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD521 5640 bytes
SHA-256: 1aae5a965fb003e3c9c535001ee91013ce1df584f03e96ff76d8aaf8549fb141
font_01_sfnt_off0000e85d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE85D 10608 bytes
SHA-256: 23aa5a072a6c2b1776e6072fcff585635d55dce3a2d46d381f13db830cbc49b3

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