Malicious PDF — malware analysis report

Static analysis result for SHA-256 32b080029cdb931b…

MALICIOUS

PDF

80.6 KB Created: 2021-05-07 14:52:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 18175f3a94530d4f02a84e5a5d1dd7f5 SHA-1: e1b1374c74ab2353107eca435b3e302c331192a3 SHA-256: 32b080029cdb931b3a1891b8fd73fce6b19512af9e2dc22fce0c2a5b6616b060
126 Risk Score

Malware Insights

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

The PDF file contains embedded URLs, with one pointing to 'leonvi.ru', which is flagged as a potential phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to contain metadata related to a printer, suggesting a lure to trick users into visiting the malicious URL.

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://leonvi.ru/strik?utm_term=hp+photosmart+c3180+printer+scanner+copier PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4391907/normal_5fcedd7bb98db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421466/normal_60341d7669f4f.pdfIn PDF document text
    • https://cdn.sqhk.co/jobubexivex/gQgejdx/falling_down_lyrics_muse.pdfIn PDF document text
    • https://cdn.sqhk.co/nipumusawobo/ahhzb2W/jeep_grand_cherokee_laredo_2013_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379362/normal_60260829bbbad.pdfIn PDF document text
    • https://cdn.sqhk.co/guzamuvi/ehgZSbd/mysynchrony_pay_bill_rooms_to_go.pdfIn PDF document text
    • https://cdn.sqhk.co/zubavagi/jbggshc/american_ww2_bomber_pilot_uniform.pdfIn PDF document text
    • https://cdn.sqhk.co/kapipota/jegfhjG/assassin_s_creed_syndicate_costumes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392857/normal_6041fa9d4cf92.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/04e13309-de01-4133-a8ed-1a7ed6d05f9c/what_programming_language_is_arduino_in.pdfIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/line_6_pod_xt_manual_espaol.pdfIn PDF document text
    • https://0bc2ebcf-5b85-435c-8290-6c6350a165f2.filesusr.com/ugd/ee98f5_942c6b9746ed4a0fb60363321e2ac0c0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/htmlwebpackplugin_template_example.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfa1c6f1-7518-405e-b96f-5c078d1def2e/2012_chevrolet_impala_tire_size_p225_55r17_lt.pdfIn PDF document text
    • http://xumasadepa.epizy.com/sewing_machine_parts_crossword_answers.pdfIn PDF document text
    • https://6f12065f-c45d-410c-b048-6ec23fb2b810.filesusr.com/ugd/02ccf7_594b977e807246e3a3360b6709920bf8.pdf?index=trueIn PDF document text
    • https://1138278f-e8d0-45ef-aef3-dbdd7428ac52.filesusr.com/ugd/5be868_744c415abef547078ac18ac25821e40a.pdf?index=trueIn PDF document text
    • https://7f2467c6-0d80-4e38-8df7-27624e0b9669.filesusr.com/ugd/e19533_7bcf86317b40426182e4d60313bf9fda.pdf?index=trueIn PDF document text
    • https://4dcfe184-cd6c-48f8-9f23-5461c743a1d4.filesusr.com/ugd/cc8533_31ecb9fbfd7844b8b56cf477d111543a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gulapore/bihari_sala_aankh_mare_mp4_video.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/user_manual_for_whirlpool_washing_machine.pdfIn PDF document text
    • http://nutidefuga.rf.gd/vetatafisakenowi.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_off0000fd19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD19 5652 bytes
SHA-256: 36f9be00d5f6d01574e8811ad469ebf14453ef58442271899de211320d9361b7
font_01_sfnt_off0001101f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1101F 11032 bytes
SHA-256: 14a70e598a24cedccdfb27ef6157658df061591b1f55ad991998f3eaae901dce

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