Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7d1e695f8697ce2…

MALICIOUS

PDF

78.5 KB Created: 2021-05-16 08:23:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: cac9de0f6fedfa36b65a1ef6209dc7c9 SHA-1: 2c14a7f3bc9267cdd2d4383bcb94da5e33b5dbff SHA-256: a7d1e695f8697ce2f7dd9cae9891988b1e709412d5917a8231d239a81b86778c
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating it's a phishing or trojan delivery mechanism. It contains numerous external links, many pointing to disposable domains, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, contains keywords related to search queries, reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://mezovuduw.ru/strik?utm_term=dometic+rv+awning+repair+parts PDF link annotation
    • http://domsale.xyz/the_mother_tongue_amy_tan_summaryzoy3r.pdfIn PDF document text
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdfIn PDF document text
    • http://skidki-day.site/why_is_my_kitchenaid_refrigerator_beepingi36ct.pdfIn PDF document text
    • http://jiludedo.iblogger.org/75947240907.pdfIn PDF document text
    • http://bigpleasure.ru/izotope_ozone_8_manualegh60.pdfIn PDF document text
    • http://natezaka.iblogger.org/muxebiruxagaka.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/cBLjjge/veluvumufinalabige.pdfIn PDF document text
    • https://cdn.sqhk.co/xedufoga/Hgcgeib/82584471173.pdfIn PDF document text
    • https://cdn.sqhk.co/lolajelor/jehrjbS/80214808396.pdfIn PDF document text
    • https://cdn.sqhk.co/samekikogeri/dionlib/titans_mod_for_minecraft_pe.pdfIn PDF document text
    • http://italiahot.space/guideline_stroke_20194e51k.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wukara/chamma_chamma_song_free_mr_jatt.pdfIn PDF document text
    • http://tagitefidunun.epizy.com/easy_guitar_arpeggios.pdfIn PDF document text
    • http://sokuwijezelikut.rf.gd/degenerate_art_exhibition.pdfIn PDF document text
    • http://savefativiluz.epizy.com/39047151856.pdfIn PDF document text
    • https://31f314b5-0768-4c24-bd49-4596ea953b46.filesusr.com/ugd/85a4b1_3c135a5f40fe4cecb2688d46ebd08c3a.pdf?index=trueIn PDF document text
    • http://mebusojuf.rf.gd/turkey_scholarship_interview_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/brushes_for_illustrator_cs6.pdfIn PDF document text
    • http://bekujefil.epizy.com/types_of_phobias_download.pdfIn PDF document text
    • http://lexegeverurejeb.rf.gd/hipospadia_y_epispadia.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/gesiwepiw.pdfIn PDF document text
    • https://53ebb62d-ddaf-432f-8dc3-1f4746653467.filesusr.com/ugd/bbd3cf_1f61308e5d4444fdb61b6b5d9f887548.pdf?index=trueIn 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_off0000f5e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5E6 5372 bytes
SHA-256: 215901899bb9bbd867158925b128a4858c252a09378a0af982aee63d0082ae0e
font_01_sfnt_off00010833.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10833 10716 bytes
SHA-256: 69aee8884992e60c139d4673bb6aef695ed63bd7591d11cb74ce482b224fdcd7

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