Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcc55dfba958d2cc…

MALICIOUS

PDF

79.3 KB Created: 2021-03-19 18:28:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 81494390355675da65f837317f944476 SHA-1: d991e2278acae85e6092163e5e99e1df475af346 SHA-256: bcc55dfba958d2cc93727561f5425e190bb0ad1dbc7a7febd825172a352fc993
126 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains numerous embedded URLs, many of which point to disposable hosting or link farms, suggesting an attempt to redirect users to malicious content. The document body, though heavily obfuscated, appears to be a lure related to game hacking, aligning with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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/wix?keyword=cartoon+wars+2+hacked+apk PDF link annotation
    • http://fasekafalig.scienceontheweb.net/nozurata.pdfIn PDF document text
    • http://siviveko.getenjoyment.net/what_to_do_if_your_washer_doesnt_spin.pdfIn PDF document text
    • http://bumaga.bz/how_do_you_reheat_chicken_piccata878q4.pdfIn PDF document text
    • https://falusawo.weebly.com/uploads/1/3/6/0/136084102/burawopu-putikime-juvosa-katozumifusu.pdfIn PDF document text
    • http://xolokukifimiv.sportsontheweb.net/denisufimiludikegoz.pdfIn PDF document text
    • http://sosiwawivijomo.scienceontheweb.net/60385674817.pdfIn PDF document text
    • http://mebovedu.getenjoyment.net/1076988081.pdfIn PDF document text
    • https://silukijexopul.weebly.com/uploads/1/3/4/8/134868047/faccc6418935a.pdfIn PDF document text
    • http://housefashion.ru/buvosukuxipemiserivabekusvv9jf.pdfIn PDF document text
    • https://juzudibat.weebly.com/uploads/1/3/4/3/134328144/dokuroduxekaxi.pdfIn PDF document text
    • https://bexusisase.weebly.com/uploads/1/3/4/5/134596812/bb3b069fee.pdfIn PDF document text
    • http://zdsshop.top/29876527846z0yp4.pdfIn PDF document text
    • http://ronifibofizet.medianewsonline.com/how_to_airdrop_mp3_from_mac_to_iphone.pdfIn PDF document text
    • http://dedigevobunobe.medianewsonline.com/plant_adaptation_worksheet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xegilejefaga.epizy.com/tds_challan_280_in_excel_format.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/pexasokezegapun.pdfIn PDF document text
    • http://rebikesumusosu.rf.gd/nasar_wilderness_first_aid_book.pdfIn PDF document text
    • http://lolunoxij.myartsonline.com/tisegibezadixoxafa.pdfIn PDF document text
    • http://bividit.rf.gd/meant_to_be_chords.pdfIn PDF document text
    • http://lopakesuzuw.atwebpages.com/rebazasujidi.pdfIn PDF document text
    • http://jinonepi.epizy.com/cpwd_specification_2020.pdfIn PDF document text
    • http://pelebirepopo.onlinewebshop.net/argumentative_essay_structure.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/history_of_jose_rizal.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_off0000edea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDEA 5320 bytes
SHA-256: 38e14ef73af47c82adeffef20afb4eb2d25a25b0b0ecf83693cf75e50cd16d7d
font_01_sfnt_off00010008.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10008 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off00010896.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10896 11888 bytes
SHA-256: c8dc53cfcc1e35602b3c6b42bb2b4d3d9486975bf0f99c2606c4218980510872

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