Malicious PDF — malware analysis report

Static analysis result for SHA-256 11c49d82f791c183…

MALICIOUS

PDF

69.2 KB Created: 2021-02-20 04:24:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: d25b70132db6bed7a1c254fd02b1dff2 SHA-1: 7145a6298d44c943165036b4975d85c507f4d29e SHA-256: 11c49d82f791c18348bac59fcb7edae84c7fa6bf8e0f3557b834f76feefa1a15
136 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics, including ML and ClamAV, indicating malicious intent. It contains invisible links pointing to suspicious domains, suggesting a phishing or malware distribution lure. The document body is heavily obfuscated, but the presence of external URIs and the ML classification strongly suggest it's designed to download or redirect to malicious content.

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
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://maypoin.ru/strik?utm_term=yard+machine+by+mtd+front+tine+tiller PDF link annotation
    • http://cosmosqrab.online/jabibeziverezesae8bku.pdfIn PDF document text
    • https://cdn.sqhk.co/libegavezu/yhf1Jey/18576983055.pdfIn PDF document text
    • http://natlegend.space/15605216866ogxsa.pdfIn PDF document text
    • http://qrettalq.online/pejujomokobebediwitijofmxi5m.pdfIn PDF document text
    • http://reactivascotia2020.com/denuterejaviwereluwufokulfr7ty.pdfIn PDF document text
    • http://proba7.xyz/23777377065cxgdk.pdfIn PDF document text
    • http://com-login8.xyz/64757261093ok709.pdfIn PDF document text
    • http://dsv-trening.ru/laptop_tycoon_sandbox4bsmf.pdfIn PDF document text
    • https://cdn.sqhk.co/kadeposamo/hlgjU6V/sotimexeb.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/vutame/50308614387.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/texifopusupukererefe.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/37206781554.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/christmas_tree_lights_app_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jusagi/wugewikezo.pdfIn PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/nothing_but_the_blood_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/birdhouse_plans_free.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_off0000d253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD253 5288 bytes
SHA-256: 2973078b9cfa864b6b0628fb1536e0e2cdfe6eef49917d3de493b558b3e1f382
font_01_sfnt_off0000e42e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE42E 10288 bytes
SHA-256: 9a4c9ca9bd55da5ddef27f862660621a07bacb3b4c6fd290edb23a23b030e7e5

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