Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4780ac7fd8efa58…

MALICIOUS

PDF

65.5 KB Created: 2020-11-29 06:30:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c4aeee332c14f3e36bce632db23dc9d8 SHA-1: bfb0b02e8646ede367775690a4bb621f5fe0f56b SHA-256: d4780ac7fd8efa587a8a55453773eadae0cc6703bbaab0b1051009d44e48601a
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically identified as a phishing trojan. It contains an embedded URL that likely serves as a lure for downloading a malicious application, indicated by the presence of a 'download button' heuristic. The document's content, though partially garbled, suggests a lure related to 'smashy road mod apk'.

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=smashy+road+mod+apk
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/47f90058-c5c5-4261-86b7-2aca919b7270/nelowamafukirefirezawusag.pdf
    • https://uploads.strikinglycdn.com/files/b0948a03-bcec-48f8-b61d-2f1e552b91fe/zupisureropepa.pdf
    • https://uploads.strikinglycdn.com/files/7df9c7c9-96ab-403d-aedc-50994a0a4803/39936753221.pdf
    • https://s3.amazonaws.com/zijivevip/edible_printed_icing_sheets_near_me.pdf
    • https://uploads.strikinglycdn.com/files/348064d7-75a1-44cc-879c-07b7c6a5f257/who_is_max_s_mom_disney.pdf
    • https://uploads.strikinglycdn.com/files/828872a5-9f5a-4e35-9dcf-f0418aa59ced/tobiluvegusumajale.pdf
    • https://s3.amazonaws.com/xebuvuwov/super_god_gene_thai.pdf
    • https://uploads.strikinglycdn.com/files/6f89109d-8e9a-4d57-b134-3e0b268b0d8f/sikowomoritoxenekani.pdf
    • https://uploads.strikinglycdn.com/files/00cf8ffb-611d-45a9-b198-eb31ec4ca1d1/lenobotalukituroterus.pdf
    • https://uploads.strikinglycdn.com/files/c9e96a8d-c02b-45c5-9e93-6081be9e65aa/tenosipujezegivoti.pdf
    • https://uploads.strikinglycdn.com/files/79e41156-c67d-4172-aef6-b90280e0c63d/36188224870.pdf
    • https://uploads.strikinglycdn.com/files/dc278a26-fdda-4532-b23b-194792f50d45/11196624653.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_off0000c406.bin
0f77ab19ca589a40e3b0b51147647314b3e95087a304bac82037d8906ef50384
pdf-font-stream PDF embedded font (sfnt) at offset 0xC406 5436 bytes
font_01_sfnt_off0000d65a.bin
aa6e51e654300acb1e7172c2af5b534ae6438c4a31a515e1bc773bf5bddfbafd
pdf-font-stream PDF embedded font (sfnt) at offset 0xD65A 10360 bytes