Malicious PDF — malware analysis report

Static analysis result for SHA-256 87877032acedc5de…

MALICIOUS

PDF

78.3 KB Created: 2020-12-19 22:49:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 3dd049a1053f4db855c3158a3f0a8c7f SHA-1: e745150cd3a35a282dba7168faeec73e25d7392c SHA-256: 87877032acedc5de4543df557d04db3f600ec9b402046fc424c3c22fa46a8ac1
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL points to a suspicious domain, likely serving as a lure for phishing or malware distribution. The document body, though heavily obfuscated, contains text related to 'Factory accident report writing', suggesting a pretext for the malicious link.

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://trafffe.ru/aws?utm_term=factory+accident+report+writing PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370074/normal_5fd24b057f552.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403276/normal_5fd28c813cc08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485714/normal_5fb3a4ee2cc85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471723/normal_5fad2598de5ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377902/normal_5f9a82fe5c5b0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/c869a6bf-1dae-414c-bca9-31a4c5e6a568/15509228779.pdfIn PDF document text
    • https://s3.amazonaws.com/tulosa/causeway_school_eastbourne_ofsted_report.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/67281052614.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/643e1279-81bf-432e-a3a6-370e5a4f1d35/mizamenutepomokasoviso.pdfIn PDF document text
    • https://s3.amazonaws.com/midipes/susex.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/2008_f150_transmission_fluid_change_cost.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/210f2aad-664b-4e06-a543-b2abec3eb3a6/vefefo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf48b64e98326c020684bd/1606371510672/kevujawelixegad.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e869.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE869 4968 bytes
SHA-256: fda2e622c1af7c6901959c11b1fc25d247ce140ea08810c3a528b2f6ce804a2b
font_01_sfnt_off0000f974.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF974 10652 bytes
SHA-256: a8f827697d9e9360fd037c1d36f748b362c0df1329c381dcc0ad4d967b57cdff
font_02_sfnt_off00011dce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DCE 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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