Malicious PDF — malware analysis report

Static analysis result for SHA-256 58a33ecda80c07c3…

MALICIOUS

PDF

82.5 KB Created: 2021-04-16 01:01:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 8a34c68a5d2154d4caf6772157d9d83b SHA-1: da9f747d129280977fb67bfe20e6344e38f944f1 SHA-256: 58a33ecda80c07c3e4dc76c6fe0830b0d40ae1acedfc024c49d0db285d1391e4
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 numerous external URIs and is identified as a link farm hosted on disposable domains, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains references to 'club card tattoo meaning' and 'wkhtmltopdf', indicating a potential lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jumiwimov.ru/strik?utm_term=club+card+tattoo+meaning PDF link annotation
    • https://tigewatujuw.weebly.com/uploads/1/3/0/7/130738543/6598d68ba18.pdfIn PDF document text
    • http://hallop.xyz/87906692915tgi2b.pdfIn PDF document text
    • http://reliables.ru/cicada_ringtone_androidksmvq.pdfIn PDF document text
    • https://bibatajikoxego.weebly.com/uploads/1/3/5/3/135315017/0c4a466bf.pdfIn PDF document text
    • http://myfirstsite.xyz/37934351450sj55n.pdfIn PDF document text
    • http://manapuzasupin.sportsontheweb.net/monosacaridos_disacaridos_y_polisacaridos.pdfIn PDF document text
    • http://tipofeliluget.medianewsonline.com/why_is_the_gnostic_theology_rejected.pdfIn PDF document text
    • http://lnstagram-help-businesss.com/guwotitaxagereseii2hm.pdfIn PDF document text
    • https://xuxozuxar.weebly.com/uploads/1/3/5/3/135326767/timaxu.pdfIn PDF document text
    • https://pijagifodila.weebly.com/uploads/1/3/4/3/134308300/3650577.pdfIn PDF document text
    • https://buvawaxeve.weebly.com/uploads/1/3/0/8/130874113/8273569.pdfIn PDF document text
    • http://onlinekartiadesi.com/science_crossword_puzzles_printable_with_answers3g8xp.pdfIn PDF document text
    • https://naligunuded.weebly.com/uploads/1/3/4/4/134472871/tokosokufekijuvi.pdfIn PDF document text
    • http://microbladingeyebrowsdallastx.com/fannie_mae_guidelines_regarding_gift_fundsqfbw2.pdfIn PDF document text
    • http://vugekowuzujed.scienceontheweb.net/21976073679.pdfIn PDF document text
    • http://ecoterritory.store/tn_boaters_license_study_guides4ypy.pdfIn PDF document text
    • https://dejuxowiku.weebly.com/uploads/1/3/0/7/130738850/6dd67c1b.pdfIn PDF document text
    • http://fuxezaboxekave.scienceontheweb.net/whats_another_word_for_touch_base.pdfIn PDF document text
    • http://quinzsy-studio.design/donubadaxo23ut2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://wazeniwemir.onlinewebshop.net/road_accident_definition.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f607.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF607 5124 bytes
SHA-256: ee93e11a1c0306a30cad78b7cfade6205f605deceb1a12589007c972a4d08842
font_01_sfnt_off00010750.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10750 11264 bytes
SHA-256: 71ed565a8a1f40e79798e22720f3845fa9951a1414601d4f29ad13ff5bfed0b4
font_02_sfnt_off00012d87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D87 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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