Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cee64feb4024485…

MALICIOUS

PDF

79.4 KB Created: 2021-02-25 22:54:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: d7a9e324b2cffc5f34b4a1e4399fc55e SHA-1: 49eaadd875f508872d752c209268aed6b8007262 SHA-256: 2cee64feb4024485f5bae2d644fc901d4244f968f3c17a7a88fa9900ec4162a7
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the overall structure and URL patterns point to a common phishing lure.

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://bologen.ru/strik?utm_term=how+do+i+schedule+an+appointment+at+the+florida+dmv PDF link annotation
    • http://lobabinuladeri.medianewsonline.com/how_to_fix_water_leak_in_kenmore_refrigerator.pdfIn PDF document text
    • http://famozosivupiwij.sportsontheweb.net/bersa_combat_plus_review.pdfIn PDF document text
    • https://cdn.sqhk.co/fofodafexadu/QmibOkK/clash_of_kings_west_mod_apk.pdfIn PDF document text
    • http://fullstacket.online/dns_server_clash_of_clansox252.pdfIn PDF document text
    • http://silkhfig.bid/casio_g_shock_mrg_g1000_price_in_indiavoe3i.pdfIn PDF document text
    • http://bumumapa.mypressonline.com/41075481683.pdfIn PDF document text
    • https://cdn.sqhk.co/dazulegug/jcQhb8A/pink_skater_skirt_plus_size.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379718/normal_5fde5de1f0bbc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368496/normal_5ff1c3d9f36e5.pdfIn PDF document text
    • http://fit-italy.space/21262895114lzh6b.pdfIn PDF document text
    • http://zipubezexupoka.mywebcommunity.org/55752223208.pdfIn PDF document text
    • http://casbah2point0.com/55902114343aaa38.pdfIn PDF document text
    • https://cdn.sqhk.co/wifopuzuxiba/jhnDgej/13202288638.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370778/normal_60273df34b923.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383922/normal_60089055845c8.pdfIn PDF document text
    • https://cdn.sqhk.co/kixepijap/MhifgeQ/vikings_history_channel_episode_guide.pdfIn PDF document text
    • http://bonboxstudio.com/trim_up_the_tree_lyricsr24ay.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000fa34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA34 5508 bytes
SHA-256: aa062f2515ef50c255cac18e2a613eccb6d3d19e8b6e095ceca18cf871bab071
font_01_sfnt_off00010cdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CDF 10252 bytes
SHA-256: f352dc62dea90442ebb24e8ab7bbd8b697d5f673d3e7ac8dfa1f3bc445659170

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