Malicious PDF — malware analysis report

Static analysis result for SHA-256 7deb037174fb3304…

MALICIOUS

PDF

79.1 KB Created: 2021-03-25 07:26:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 21706683c04a6ba1b8a6cb7b882465fe SHA-1: 89513c3b9793030b87585f44e48d88c06b2f5580 SHA-256: 7deb037174fb33044a6875b47e833d59c59aa1c600499cff4fb64ff0e307f9f8
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, with a primary suspicious URL pointing to 'botokaw.ru', likely serving as a landing page for a phishing campaign. The document body, though heavily obfuscated, appears to be a lure related to a common household item, suggesting a social engineering tactic to trick users into visiting the malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://botokaw.ru/strik?utm_term=how+do+i+replace+the+battery+on+my+dyson+dc59 PDF link annotation
    • http://leledup.mypressonline.com/weight_loss_chart_printable.pdfIn PDF document text
    • https://pofemazavuson.weebly.com/uploads/1/3/2/3/132303373/6580652.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369317/normal_5fc9312f130b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404980/normal_6048089a25582.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375509/normal_601c6287da15b.pdfIn PDF document text
    • https://posolefuriw.weebly.com/uploads/1/3/4/3/134374222/4235509.pdfIn PDF document text
    • http://dutusejutax.22web.org/19515101449.pdfIn PDF document text
    • https://pukapukipek.weebly.com/uploads/1/3/4/6/134636258/1934493.pdfIn PDF document text
    • http://mareson.getenjoyment.net/guraviwojaxubivugopuza.pdfIn PDF document text
    • https://vamexerop.weebly.com/uploads/1/3/6/0/136085595/7ae3569d.pdfIn PDF document text
    • http://lobarularexe.iblogger.org/78976645408.pdfIn PDF document text
    • http://rotawafuwuno.scienceontheweb.net/what_is_bangsamoro_organic_law.pdfIn PDF document text
    • http://kizudoluwewomam.iblogger.org/epigastric_hernia.pdfIn PDF document text
    • http://patavitukazinaz.iblogger.org/mibazutukebabemeganirosa.pdfIn PDF document text
    • https://tavifarexup.weebly.com/uploads/1/3/4/6/134611028/6827280.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/c4d8b2de-d40e-463d-ae8c-f9bf8c388658/trig_identities_calculator_mathway.pdfIn PDF document text
    • http://zerakunutage.epizy.com/cheap_dirt_bike_for_sale_near_me.pdfIn PDF document text
    • http://lirepemewepe.rf.gd/nursery_songs_lyrics.pdfIn PDF document text
    • http://fowakoleviwamop.onlinewebshop.net/jean_anouilh_becket.pdfIn PDF document text
    • http://jejogekatexun.epizy.com/falalu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b12a3e53-ac0e-43f4-b9ed-fa1290349cc2/50428691717.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cab30f5d-327e-4ec7-b424-fc51939731c3/xajadi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0df12ad-2581-412e-aec3-e928fc8d79ec/tunekogimevinowexo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c44fd0b-5e74-4efa-9239-41cb86089790/john_deere_l111_automatic_parts.pdfIn PDF document text
    • http://widepidaba.atwebpages.com/timazekeganozowirora.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_off0000f3f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F6 5888 bytes
SHA-256: ac64ccfe7f004750b543094775428001645e7951af6189ee068ac325875125b6
font_01_sfnt_off000107e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107E3 10864 bytes
SHA-256: 1d6c3bfe219a0cf34cb5858275aa22844a53650fb4cac7c524a8f0d44fcf3bb1