Malicious PDF — malware analysis report

Static analysis result for SHA-256 1080e13b7e72819d…

MALICIOUS

PDF

89.1 KB Created: 2021-02-24 14:02:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 1f3dc9f40f3c18e194c2ae6a3a8e0107 SHA-1: 78aba7d8784e8745ad07885e8a2e07d9c3e62876 SHA-256: 1080e13b7e72819da8b1eb6a13b519d130b43ca81ce14d57677b86d05026f26f
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous external URLs, suggesting it acts as a gateway to malicious sites or phishing pages. The document body, though heavily obfuscated, contains keywords related to a 'sports cam 1080p manual', which is likely a lure to entice users to click on the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/wix?keyword=sports+cam+1080p+manual PDF link annotation
    • https://cdn.sqhk.co/sepufaziru/gejehem/nobigage.pdfIn PDF document text
    • http://womarerawona.iblogger.org/96272705093.pdfIn PDF document text
    • http://maturibcgj.space/extraccion_de_la_papaina_de_la_papayargr2h.pdfIn PDF document text
    • http://feedbacrnz.space/kobomusurevepabofixc9m4r.pdfIn PDF document text
    • http://dronextactical.xyz/what_to_read_after_americanahyewt8.pdfIn PDF document text
    • http://puwujodut.22web.org/65092087044.pdfIn PDF document text
    • http://yyyyyyhhhhh.space/macroeconomia_michael_parkinutm1f.pdfIn PDF document text
    • http://poverkavoda.website/basic_english_book_for_beginnersjtsb8.pdfIn PDF document text
    • https://cdn.sqhk.co/modonasuje/zYjhQja/greenleaf_season_5_episode_3.pdfIn PDF document text
    • http://zalavsky.ru/80468207884eqnl.pdfIn PDF document text
    • http://luxshop21.site/vi_editor_append_to_end_of_linelcdj6.pdfIn PDF document text
    • https://cdn.sqhk.co/xumesapaxoku/dbjamj1/76993501197.pdfIn PDF document text
    • http://aarbuz.space/nobivigeri61p82.pdfIn PDF document text
    • http://fruct.space/vadori00sgz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tekabexorita.rf.gd/vasujajo.pdfIn PDF document text
    • http://fekunowan.epizy.com/illustrator_blank_business_card_template_free.pdfIn PDF document text
    • http://tumizasikoxef.rf.gd/acf_pro_github.pdfIn PDF document text
    • http://mulazukaga.rf.gd/belize_passport_form_3a.pdfIn PDF document text
    • http://lavodusepigixu.rf.gd/gibidax.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_off00011421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11421 5572 bytes
SHA-256: bcee65bef7cc68db752ab006ced649deec71917c9ed8876dd658b443bd3ea984
font_01_sfnt_off000126f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126F7 15256 bytes
SHA-256: a3e3edc33f95340577efe017fde04478b2a06319beea1a07461b75896f9c6aed

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