Malicious PDF — malware analysis report

Static analysis result for SHA-256 32c1e30b15d2b271…

MALICIOUS

PDF

81.3 KB Created: 2021-02-23 19:42:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 088c5a3bc5edc72430be18e6e2440783 SHA-1: 5db149edfd92ceecf95ddb7057da9e2775cc768c SHA-256: 32c1e30b15d2b2710f7d629eccb34df84385a7541cd2cb04145b759ba45091da
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains numerous embedded URLs, including one pointing to 'maypoin.ru', which likely serves as a redirector to malicious content or phishing pages. The presence of external URIs and the link farm heuristic suggest an attempt to direct users to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/strik?utm_term=%25D0%25BF%25D1%2580%25D0%25BE%25D0%25B8%25D0%25B3%25D1%2580%25D1%258B%25D0%25B2%25D0%25B0%25D1%2582%25D0%25B5%25D0%25BB%25D1%258C+%25D0%25B2%25D0%25B8%25D0%25BD%25D0%25B8%25D0%25BB%25D0%25BE%25D0%25B2%25D1%258B%25D1%2585+%25D0%25B4%25D0%25B8%25D1%2581%25D0%25BA%25D0%25BE%25D0%25B2+audio-technica+at-lp60xusbgm+%25D0%25BE%25D1%2582%25D0%25B7%25D1%258B%25D0%25B2%25D1%258B PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4391893/normal_6033cb6e44aca.pdfIn PDF document text
    • https://cdn.sqhk.co/ziveluki/ilxgiip/mobakiwebajoxojavuwemuru.pdfIn PDF document text
    • http://proita.fun/xorabemidaxgz2ta.pdfIn PDF document text
    • http://good-production20.site/39028789753diggm.pdfIn PDF document text
    • http://grenkasalo4.xyz/nautical_life_latest_mod_apk_2._123xf9l8.pdfIn PDF document text
    • http://pearhaidhr.fun/ornamental_plants_listiyrj1.pdfIn PDF document text
    • https://cdn.sqhk.co/lazujanaziri/Jifhafx/76892531059.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413563/normal_5ff8940bc178e.pdfIn PDF document text
    • https://cdn.sqhk.co/temirikuji/EifgimJ/hot_pink_lips_clip_art.pdfIn PDF document text
    • http://torchqbfl.fun/dezuribalajemubakidixofa6zag.pdfIn PDF document text
    • http://5gusevshop.space/what_was_the_jacobin_club_where_did_its_name_come_fromaik6v.pdfIn PDF document text
    • http://bestpriceforukraine.xyz/honda_civic_2006_radio_code_error_et2ube.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nigowona.rf.gd/sad_boy_death_whatsapp_status_video.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/app_to_music_videos_on_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/taiwan_visa_application_form_2018.pdfIn PDF document text
    • http://losuguv.epizy.com/my_talking_angela_hack_apk_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/55675611174.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/nupesanenezutifunupov.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_off0000ebf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF8 7628 bytes
SHA-256: b2b2fb70bbdc827b6f9cb3d4c5e973a976f490fad1eb89c855f2e3ae7d732efd
font_01_sfnt_off0001039a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1039A 15508 bytes
SHA-256: 0989e16cb9b856dc183702cd2b9c17b0fd3f71f06165d77ec926c5e2c8d444c9

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