Malicious PDF — malware analysis report

Static analysis result for SHA-256 566f7134222cb636…

MALICIOUS

PDF

77.8 KB Created: 2021-02-23 03:16:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 339aa3c71bca4b2094575d168940d06b SHA-1: cbe90e15e6324d681d4be1cbc0e4cea8c06a7762 SHA-256: 566f7134222cb636659539863002a176447eea7e5a70bc15a241b8724007b42d
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains numerous embedded URLs, many pointing to disposable domains and link farms, suggesting an attempt to redirect users to malicious sites. The presence of external URIs and the overall structure indicate a phishing or malware distribution attempt.

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://jacksth.ru/wix?keyword=asco+gu+2020+checkmate+214 PDF link annotation
    • https://cdn.sqhk.co/jalizovi/5jdjdKW/fowawogatesibabubuko.pdfIn PDF document text
    • https://cdn.sqhk.co/pumopijaku/hdVnija/crimson_heart_2_mod_apk_1._2._0.pdfIn PDF document text
    • https://cdn.sqhk.co/pubamegumox/HMheYqo/11303796478.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379726/normal_5ff691501e1d7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475863/normal_5fffc3ead6551.pdfIn PDF document text
    • https://cdn.sqhk.co/xiwasazafu/bieQl0T/tuwizezenunezosimogajimo.pdfIn PDF document text
    • https://cdn.sqhk.co/diwamukef/agKG3XM/44066575026.pdfIn PDF document text
    • https://cdn.sqhk.co/raxoxawupej/9NGggig/90s_indie_rock_music_playlist.pdfIn PDF document text
    • http://ibkreactiva2020.com/idle_apocalypse_through_the_portal74as4.pdfIn PDF document text
    • http://tomogorman.com/arris_tg862_modem_manualw6iuh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jigigoxeziruvi.rf.gd/53917902375.pdfIn PDF document text
    • http://fokafupu.rf.gd/1484350863.pdfIn PDF document text
    • http://sudimomovaw.epizy.com/jemisikenomad.pdfIn PDF document text
    • http://vobujilub.epizy.com/25170227290.pdfIn PDF document text
    • http://xoziviriwazobe.rf.gd/hypertherm_powermax_65_price.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_off0000f48a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF48A 5552 bytes
SHA-256: 1479138d119e7d0ca1b48c1ab461581589bd82fdda468ca2c06a1f04178e98bd
font_01_sfnt_off00010760.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10760 10376 bytes
SHA-256: d8785a36e0accfa09e0fcca742542f95f5f0789cbbb18d9941aa169e54424a2d

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