Malicious PDF — malware analysis report

Static analysis result for SHA-256 08a6a5ed0b5ca6e4…

MALICIOUS

PDF

160.0 KB Created: 2020-11-10 09:29:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 2ba7835809b284c2cf0f30a67ce39c87 SHA-1: 9368a5d129864fe234cbd83609d6a578521268b0 SHA-256: 08a6a5ed0b5ca6e4cb97166f10618be5c65226da1317650ece8aa052294ea545
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'traffking.ru', which is likely a malicious domain used for phishing or malware distribution. The document body, though heavily obfuscated, contains keywords related to the embedded URI, suggesting a lure to trick users into visiting the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffking.ru/123?keyword=hormigoneras+usadas+trocas PDF link annotation
    • https://rokolumer.weebly.com/uploads/1/3/0/9/130969153/a47c14fb2.pdfIn PDF document text
    • https://velolabojenap.weebly.com/uploads/1/3/4/5/134525374/satabosapaba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367299/normal_5f918fb3619fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464297/normal_5fa2fa993ae90.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/mozirolinitaje/jitufenujur.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/let_your_conscious_be_your_guide_lyrics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cd3e5cc-89d6-4f45-862c-edb95ae20113/15392560296.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/cord_of_three_strands_ceremony_script.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/geographical_location_of_australia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8acb135-ae4d-4794-9041-5ea52d13094a/gexikebi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13b4776a-62ab-416a-8d93-cd258a961486/paxenozawikofexor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/043ddd25-eca6-4b4a-9423-58c15e99804e/golisogasexeladegukinumo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b5af699-36af-470f-88d5-d3b094cf0b97/disable_add_ons_in_google_chrome.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f309f8f-795c-4825-95c6-b948250b2a6d/42117703502.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_off000237dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x237DC 5188 bytes
SHA-256: 6d88ff5171674215d9442d237edfb46baa4fc30726cc213d5a2b7ca7aa1e2053
font_01_sfnt_off00024966.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24966 12152 bytes
SHA-256: f79e95b64063933a4bbbae059f275ea39fdb162ed186500b2fa563cd26c8ca8e

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