Malicious PDF — malware analysis report

Static analysis result for SHA-256 03606a8b13bcdd28…

MALICIOUS

PDF

70.3 KB Created: 2021-03-16 17:48:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b30ed4b33f846b5673673626baa89c4e SHA-1: 4fb087c583d8835d0bf9a59f08f6ae6fa452ac7c SHA-256: 03606a8b13bcdd28f515e355d68c6500021e379ee27427430085751c56ad6399
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'Honey badger reading comprehension answers' and embeds multiple URLs, one of which is flagged as malicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the document content suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://ponafet.ru/123?utm_term=honey+badger+reading+comprehension+answers
    • https://fikuwigo.weebly.com/uploads/1/3/1/0/131071253/4844165.pdf
    • http://freds.space/daily_reading_comprehension_grade_7vxjla.pdf
    • http://zujuzerawijuk.medianewsonline.com/68609108015.pdf
    • http://veruvipavopa.getenjoyment.net/wanepozon.pdf
    • http://reguvixelupuj.iblogger.org/29258292418.pdf
    • http://xufededubumavif.scienceontheweb.net/when_the_world_as_we_knew_it_ended_meaning.pdf
    • http://jesibijifinuz.mywebcommunity.org/what_is_supply_chain_management_and_why_is_it_important_in_hindi.pdf
    • http://okclub.org/luvuvosefizubotedonopi97nzz.pdf
    • http://migerov.xyz/5956021618g7fxw.pdf
    • https://benedelewerovil.weebly.com/uploads/1/3/1/3/131384674/aae0d629400.pdf
    • http://jsexj.fun/ne_me_quitte_pas_paroles_en_arabe93cfe.pdf
    • http://pobesegu.scienceontheweb.net/mojurimukusorevu.pdf
    • https://paxuxitusokewu.weebly.com/uploads/1/3/1/3/131380341/5795744.pdf
    • https://tixonanixob.weebly.com/uploads/1/3/4/8/134890866/govipog.pdf
    • http://vifezitenof.getenjoyment.net/bow_tie_pasta_with_sausage_and_peppers.pdf
    • http://bapatavusirave.mygamesonline.org/24549717781.pdf
    • http://jedomagisuw.getenjoyment.net/fodusuroxivu.pdf
    • http://jirafka.space/antenna_light_font_freefgrf4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://24d1f61b-f5c5-4d2f-8180-62589f44e8d8.filesusr.com/ugd/eed56f_2cc2d2f4d0a940edb2093e33b3ea20f8.pdf?index=true
    • http://janalax.epizy.com/metabolismo_de_las_bacterias.pdf
    • https://f516a5e5-1936-4b34-b436-a929b3a34b8d.filesusr.com/ugd/774001_20d0af2239854f3fb29e784b4f89c260.pdf?index=true
    • http://renowuvix.epizy.com/windows_server_2012_essentials_download_iso_64_bit.pdf
    • http://kodugexibitomo.rf.gd/61554206117.pdf
    • http://pavejovubebus.rf.gd/gelitubotade.pdf
    • https://2d130471-2a64-48ba-87cf-8f1e86c6acad.filesusr.com/ugd/9c43ec_e51e7e6218514d2b979e50f9c0f6ecbc.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d558.bin
31c939fa3517edac30fce9af6512ab6bf7dd8e81d02f6174cf76af439b9b9514		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD558 5752 bytes
font_01_sfnt_off0000e8d6.bin
49b5ec896685d308aa60a52a6e90b9b004a925ff988439638f669c591444c8c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D6 10308 bytes

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