Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c0c7df7cc63694f…

MALICIOUS

PDF

75.2 KB Created: 2021-03-27 21:05:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 8a0214db5187086eb88f2bca72212def SHA-1: f8de8ebf83d6cff0da82344003e9dd02ba787240 SHA-256: 1c0c7df7cc63694fdb4c2574f140b4e023fae8659aa46ce34e0685f0513f8465
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with several pointing to domains flagged as potentially malicious or part of link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and 'blagues droles courtes pdf', suggesting a lure to disguise the malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://resalured.ru/award?keyword=blagues+droles+courtes+pdf PDF link annotation
    • http://kezosod.iblogger.org/doterra_calmer.pdfIn PDF document text
    • http://fowatufilomit.iblogger.org/york_yvwa_chiller_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/vefomatakin/i2zjg5K/54342069626.pdfIn PDF document text
    • https://cdn.sqhk.co/wixikinotu/mjaiejh/dudenivifetenegureporol.pdfIn PDF document text
    • https://cdn.sqhk.co/xipitufekaru/hbBggci/disney_cars_xrs_rocket_racing.pdfIn PDF document text
    • http://copyright-central-media.com/powerpoint_animated_icons_freeyk1m3.pdfIn PDF document text
    • https://cdn.sqhk.co/xadowififux/Thgjejj/langrisser_i_ii_remake_review.pdfIn PDF document text
    • https://cdn.sqhk.co/bupabumo/hdPFiil/bdo_gathering_level_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/votiwixuduzo/hf5AjbZ/69308508255.pdfIn PDF document text
    • http://puzofogerexiwi.22web.org/84885107514.pdfIn PDF document text
    • https://cdn.sqhk.co/lupobikud/jbjgsXV/block_hexa_puzzle_app_store.pdfIn PDF document text
    • http://olivamebel.com/kokewozolu8dzcc.pdfIn PDF document text
    • https://cdn.sqhk.co/fagiseregu/47pgdjd/office_life_3d_game_level_19.pdfIn PDF document text
    • https://cdn.sqhk.co/kelopifagisu/qsgcjcZ/gupadiviledojenazutina.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/sowirutelevolur/maytag_centennial_dryer_doesnt_start.pdfIn PDF document text
    • http://mojedebebetum.epizy.com/hardball_imdb_parents_guide.pdfIn PDF document text
    • http://kukadafimi.rf.gd/1177054699.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/wrong_turn_3_movie_720p.pdfIn PDF document text
    • http://tosizufokora.epizy.com/bojirewumiji.pdfIn PDF document text
    • https://s3.amazonaws.com/jofunozuzof/21863217216.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/truecaller_app_install_apk_free.pdfIn PDF document text
    • http://bivukakodet.rf.gd/13217703608.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_off0000e3e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3E3 5372 bytes
SHA-256: 657e08f801aa32b4e3d760cc89543315a9527418fab802385bf2b9f1303779ca
font_01_sfnt_off0000f63d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF63D 12508 bytes
SHA-256: 75b44333a321fef9138b72400e5f9d3c0611fbd7ba970b16529ed22feb5025b8

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