Malicious PDF — malware analysis report

Static analysis result for SHA-256 5449714efe6768c0…

MALICIOUS

PDF

74.5 KB Created: 2021-02-27 03:42:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: c04aa95e6973e5a6935dc77d92a4c0b2 SHA-1: a74339af4c7a93c0e8db2cd53f4cacc1e98a1403 SHA-256: 5449714efe6768c00a53b24a0e6695321669dc80a3b68c92f455509935535c5f
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains a large number of external links, suggesting a link farm or redirection mechanism to potentially malicious sites. The presence of embedded URLs and the overall structure indicate an attempt to direct users to external content, likely for phishing or to download further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://fokemale.ru/strik?utm_term=formato+minuta+de+reuni%25C3%25B3n+excel PDF link annotation
    • https://salogisamokowo.weebly.com/uploads/1/3/4/6/134649366/9094514.pdfIn PDF document text
    • https://tetemubegogik.weebly.com/uploads/1/3/4/4/134443084/1c8c60e74.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454300/normal_5ffb8a1d19fdf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489061/normal_5fed4484bb058.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450036/normal_600632c82b55e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486363/normal_5ffe77e207366.pdfIn PDF document text
    • https://dabomisefeb.weebly.com/uploads/1/3/0/7/130775205/87832deedb2254.pdfIn PDF document text
    • http://penageli.getenjoyment.net/rojozijopadasewilelem.pdfIn PDF document text
    • https://putajomarope.weebly.com/uploads/1/3/1/4/131437676/nasapipuruvug_mamawikur_vajilasaga.pdfIn PDF document text
    • http://likedizar.medianewsonline.com/3_articulos_de_la_constitucion_mexicana_mas_importantes.pdfIn PDF document text
    • https://jewafime.weebly.com/uploads/1/3/2/6/132681773/julakolamapar-vogofazowes-nibupopek.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378175/normal_5ff14d4b95339.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/tawovojo/icbc_commercial_vehicle_new_claim_report_form.pdfIn PDF document text
    • http://dopovis.myartsonline.com/32332321950.pdfIn PDF document text
    • https://s3.amazonaws.com/tezude/93436090861.pdfIn PDF document text
    • http://palelezugob.onlinewebshop.net/my_dyson_brush_is_not_spinning.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/95443472366.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/boxizitejefuputolisovobe.pdfIn PDF document text
    • http://vakizonozajaxe.onlinewebshop.net/94686415720.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_off0000e508.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE508 5068 bytes
SHA-256: b3226a52f3c8176d347b9718f3dd45d917d9dcacc0971cc062b1306683ccb296
font_01_sfnt_off0000f5eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5EB 11412 bytes
SHA-256: 78bd9e7ec3c537303ae77f3dcefb30eda09a54ce1b048a9231735f71e35f5cfa

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