Malicious PDF — malware analysis report

Static analysis result for SHA-256 50d9193d0740e121…

MALICIOUS

PDF

80.1 KB Created: 2020-12-25 13:59:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 55f53b7e7156cdda3f01c676310f05be SHA-1: 9253e916d80bb8c34eb6063f0bfd105c95bb4384 SHA-256: 50d9193d0740e121566581168a678ca0dc712005c45dba3f5a07b8cb32122372
254 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'traffmen.ru'. Additionally, it exhibits characteristics of an advance-fee scam lure, suggesting a phishing or fraud attempt. The presence of numerous embedded links, including one to 's3.amazonaws.com/tokatefozude/wodatale.pdf', further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://traffmen.ru/strik?utm_term=superhero+run+2019+near+me
    • https://bugitepekasi.weebly.com/uploads/1/3/4/6/134669175/togeraliwebasuxaz.pdf
    • https://rokufekajo.weebly.com/uploads/1/3/0/8/130814342/kekakoxagopofo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/tokatefozude/wodatale.pdf
    • https://uploads.strikinglycdn.com/files/f11da5fc-ad33-41d0-a1d2-0c5a86f6eb50/kings_rising_download.pdf
    • https://s3.amazonaws.com/polexebuj/g-_325_biographic_information_form.pdf
    • https://s3.amazonaws.com/semuxemakaw/appraisal_form_for_investment_property.pdf
    • https://s3.amazonaws.com/lakujusitejojet/pathfinder_bard_guide_google_docs.pdf
    • https://s3.amazonaws.com/vovopafubipu/arthur_conan_doyle_books_in_bengali.pdf
    • https://s3.amazonaws.com/vasagesorajirem/jimotoluwobawuxaroxeme.pdf
    • https://uploads.strikinglycdn.com/files/9101fd37-4803-4104-af77-6a1c00c79a84/schumacher_battery_charger_manual_xm1-5.pdf
    • https://uploads.strikinglycdn.com/files/b9d41a27-8c5e-40dd-9ccc-2727e2890700/87436608650.pdf
    • https://s3.amazonaws.com/wibadinavosunom/67521773855.pdf
    • https://s3.amazonaws.com/zoromexemuzid/convert_adobe_file_to_word_free.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e238.bin
d89e1973569968b86201c5b59a840fca7ab810b416c19d53cc7db3e2096a1a56		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE238 5188 bytes
font_01_sfnt_off0000f39f.bin
ebe105c1b8d10818cf69e50ad36c48799617d6deb0c63f6f01bd2bcf53d4e92a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF39F 16084 bytes
font_02_sfnt_off0001259f.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1259F 4324 bytes

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