Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8e424e61a9ab32a…

MALICIOUS

PDF

83.0 KB Created: 2021-02-25 00:22:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 03418165ff61166854baa6bcb4d035cc SHA-1: ceb1cf138c99ed7218882802e35913fe9064fc3a SHA-256: d8e424e61a9ab32aef4a5563a0e5a8b552e5184d6680c28c2e66dba14362d0df
96 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, with a high risk score. It contains an embedded URL pointing to a suspicious domain, disguised as a printer driver download. This suggests the document is part of a phishing or malware distribution campaign, likely using the embedded URL to serve a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/wb?keyword=hp%20laserjet%20p1006%20printer%20driver%20for%20windows%2010%2064%20bit PDF link annotation
    • http://tonedomopoja.scienceontheweb.net/krups_nespresso_coffee_machine_spare_parts.pdfIn PDF document text
    • https://cdn.sqhk.co/bibikodazit/idviiie/43888088653.pdfIn PDF document text
    • https://cdn.sqhk.co/nedabuke/hV3jfOz/red_and_blue_jordan_1_fearless.pdfIn PDF document text
    • http://vugekowuzujed.scienceontheweb.net/my_electric_dryer_is_not_getting_hot_enough.pdfIn PDF document text
    • https://cdn.sqhk.co/leloxoreje/aiggfhf/lupajuzulomanogajeketo.pdfIn PDF document text
    • https://cdn.sqhk.co/jedepazisu/Wgfiejf/30595726325.pdfIn PDF document text
    • https://cdn.sqhk.co/pufowuvikij/jjfqJib/amazon_gold_wedding_rings.pdfIn PDF document text
    • http://topukovatawosu.sportsontheweb.net/how_to_learn_probability_easily.pdfIn PDF document text
    • http://kunujunekedi.mygamesonline.org/87317888709.pdfIn PDF document text
    • https://cdn.sqhk.co/gobuwovuv/9uKjeii/labekejebalugep.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/xuzakob/benikuzesusaxuninixav.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/38106277363.pdfIn PDF document text
    • https://s3.amazonaws.com/zagubip/35436977093.pdfIn PDF document text
    • https://s3.amazonaws.com/vavebufevodutob/83423849826.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/charlestons_nutrition_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/visualizer_template_file.pdfIn PDF document text
    • http://nukilaba.myartsonline.com/do_all_oral_b_brush_heads_fit.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/gigunetit.pdfIn PDF document text
    • https://s3.amazonaws.com/tifuwuw/mozoguvamal.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_off0001070f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1070F 5800 bytes
SHA-256: f7643f0c76ba24baf2dd920e2084307e60eba58eb6ce01b486de371d5e539c86
font_01_sfnt_off00011af4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AF4 10240 bytes
SHA-256: c9500362a72ed57c239ef7b845b4b1ec2bfd21fbf6d56050863475d6dc13065b

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