Malicious PDF — malware analysis report

Static analysis result for SHA-256 57e27b03ac5c4446…

MALICIOUS

PDF

86.5 KB Created: 2021-02-24 08:57:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 47abd2bbed80fbfeb4cdcb94e93243b4 SHA-1: 9a88e14ea3cfb3e4ab8056903e71d4c9578916be SHA-256: 57e27b03ac5c44464e317defcad99d6d02a1207835722ac4595d717cc50cc05c
126 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, many of which point to disposable domains or link farms, suggesting a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to a search query, directing users to external sites.

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
  • 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://baarspo.ru/strik?utm_term=what+is+the+4th+industrial+revolution+pdf PDF link annotation
    • https://cdn.sqhk.co/zujubokave/f6x9hif/derotipil.pdfIn PDF document text
    • https://cdn.sqhk.co/risenulowo/wngcidR/josafonarulaxopujix.pdfIn PDF document text
    • http://loxesitigogu.iblogger.org/65079556697.pdfIn PDF document text
    • http://wowosuseje.22web.org/tavupebexutevomitebed.pdfIn PDF document text
    • https://cdn.sqhk.co/zamokaxu/KpKiehi/28794555970.pdfIn PDF document text
    • https://cdn.sqhk.co/xuvetuzaxi/FieyijD/paypal_phone_number_support.pdfIn PDF document text
    • https://cdn.sqhk.co/jarixizotib/dX3i8xl/galaxy_glow_hd_wallpaper.pdfIn PDF document text
    • https://cdn.sqhk.co/pitekofotada/aib21KT/wavupufowodufozusefiju.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pumuroxojab.rf.gd/fawagavodejujasi.pdfIn PDF document text
    • http://tedonipevafipe.epizy.com/ludeseraguj.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/softonic_apk_for_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/wujevikavusujobojutiwase.pdfIn PDF document text
    • http://wukerakowevomu.epizy.com/digital_cinematography_david_stump_free.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/10811012273.pdfIn PDF document text
    • http://pamakejexo.epizy.com/chsp_program_manual_2019.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_off0001137e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1137E 5292 bytes
SHA-256: 221d4ad6fbb6ad0bd7d4b4c14c52cc096727797dc07ba5e5bd2245734a8d1d7a
font_01_sfnt_off0001258f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1258F 11676 bytes
SHA-256: 95f6527812018aaad9879a9e17b14a8e0f3332b516bbc3083f2806c41279dcc1

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