Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e72d19d7db87640…

MALICIOUS

PDF

70.6 KB Created: 2021-03-02 01:52:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 37a89a7b523635117fd95f6dd426132c SHA-1: e8dc8c18a02267fb0e2adad93cfaddbaad49f7a3 SHA-256: 8e72d19d7db87640506e7568d61aadcc87296fcedbc3d6b7c8fb31a396e8d84d
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of embedded URLs, many of which point to disposable domains or link farms, indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, suggests a lure related to streaming content, which is a common tactic for phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://seumenha.ru/strik?utm_term=where+to+stream+me+and+earl+and+the+dying+girl PDF link annotation
    • https://cdn.sqhk.co/satofurijob/bijihil/lemonade_stand_ideas_pinterest.pdfIn PDF document text
    • https://cdn.sqhk.co/polopomoset/9jfUjbi/tonexuwamub.pdfIn PDF document text
    • https://cdn.sqhk.co/mevazasid/ibhnejh/sisodivepabarir.pdfIn PDF document text
    • https://cdn.sqhk.co/wibononuve/hcghhja/gijabivenokudusosil.pdfIn PDF document text
    • https://cdn.sqhk.co/mumepefofise/ikif9VU/sudden_cold_patches_on_skin.pdfIn PDF document text
    • http://moscowflowers.shop/puwojogepezum02gt8.pdfIn PDF document text
    • https://kimuremosov.weebly.com/uploads/1/3/4/7/134732255/naxuvoxex_fimiw_tobokimubageros_guramiw.pdfIn PDF document text
    • http://jirafka.space/heart_star_symbol_meaning9nnnr.pdfIn PDF document text
    • https://wefapewirevuvik.weebly.com/uploads/1/3/4/6/134667644/3049662.pdfIn PDF document text
    • https://viwukafum.weebly.com/uploads/1/3/0/7/130738591/lidad.pdfIn PDF document text
    • http://allerlo.xyz/potassium_phosphate_dibasic_safety_data_sheetjfllb.pdfIn PDF document text
    • https://cdn.sqhk.co/balapakufogo/gcTgge9/world_war_1_recruitment_posters_australia.pdfIn PDF document text
    • https://cdn.sqhk.co/konidadelan/sAuavhg/nipusuziranir.pdfIn PDF document text
    • http://zoosalon.org/54801703439tjo5r.pdfIn PDF document text
    • http://makamar.tech/a_region_in_which_two_tectonic_plates_are_moving_apartshymr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kotumeberi.rf.gd/nasijefelon.pdfIn PDF document text
    • http://dojidusajotat.epizy.com/excel_vba_worksheetfunction._match_error.pdfIn PDF document text
    • http://punejiva.epizy.com/62845989201.pdfIn PDF document text
    • https://s3.amazonaws.com/rirusozo/48298213056.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_off0000d579.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD579 5352 bytes
SHA-256: c26e3f37b958b166e1db8e310af629ca91878cdc0bfaf02cabf9c415b099477b
font_01_sfnt_off0000e798.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE798 10908 bytes
SHA-256: f6fcb6d9708f2112c5497ebff597b809d826cc10ac20a01c92454032c04e0554

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