Malicious PDF — malware analysis report

Static analysis result for SHA-256 7afeb0cf01367b34…

MALICIOUS

PDF

78.0 KB Created: 2021-01-27 07:24:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: a4d3e38d726010aa351f56a16160d3bd SHA-1: a76dd970e3b5b964a1ada0bc50ac07e8f3568b7f SHA-256: 7afeb0cf01367b343d748acb224b53cbc7cc8e89ab9daa062d729928dfdb6d66
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL that is likely part of a phishing or malware distribution scheme, masquerading as a dehumidifier manual. No scripts were extracted, but the presence of the malicious URL and the overall detection strongly suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/123?utm_term=kul+dehumidifier+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4475559/normal_5fca95c31f1eb.pdfIn PDF document text
    • https://cdn.sqhk.co/salobosemiv/1vifsjc/walking_dead_world_beyond_cast_list.pdfIn PDF document text
    • http://idealica-italiauficiale.website/pupebemufozomeyaaai.pdfIn PDF document text
    • https://cdn.sqhk.co/samigimas/ghSLsgi/bofolujozewebixovawenobiz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366317/normal_60028fc8a3ded.pdfIn PDF document text
    • https://cdn.sqhk.co/muwazubivotu/hahfsR0/vesiwumolupasage.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/iegiy6B/42168359865.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459322/normal_5ff3a1be7b720.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/tazopaju/12475155284.pdfIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/agoura_hills_high_school_performing_arts_center.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/juful.pdfIn PDF document text
    • https://s3.amazonaws.com/rerinago/arduino_starter_kit_manual_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/86235984871.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwuzerijofa/26318152011.pdfIn PDF document text
    • https://s3.amazonaws.com/lijulijowivaze/xajagevipufisun.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/spider_man_3_game_ps2.pdfIn PDF document text
    • https://s3.amazonaws.com/wisuw/flora_bacteriana_normal_intestinal.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/29868479760.pdfIn PDF document text
    • https://s3.amazonaws.com/padosumifubobo/godexelemisizixunini.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/handmade_bed_sheet_design_made_in_pakistan.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_off0000f51b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF51B 4936 bytes
SHA-256: 76fe898bf2e792fc3f65c9bf48520cc3926826092a8f773f8b6792f3b7c3c48b
font_01_sfnt_off000105b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105B4 10676 bytes
SHA-256: 9e4a1d19f3c0e5390999625029de4e2b61b5691c22a11ba72a06e922a5ce85f3

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