Malicious PDF — malware analysis report

Static analysis result for SHA-256 5032c8f9c08f07f1…

MALICIOUS

PDF

77.8 KB Created: 2021-03-11 04:24:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: de1f6b6e5cdaac8662ace64777da8a97 SHA-1: c960f53bd3b930202d00fcd478ba4a373eac7110 SHA-256: 5032c8f9c08f07f1db2a60cdf4a951706411accca9f6dda9912021ac5b94cb13
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm, suggesting a phishing or scam attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing lure designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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/wix?keyword=pawn+shops+who+buy+xbox+360 PDF link annotation
    • http://sosyaltakipcipanelin.com/my_in_brother_2240d_khng_in_c_2_mtj3ttw.pdfIn PDF document text
    • https://pefisidedufe.weebly.com/uploads/1/3/4/9/134902532/2bf67d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403260/normal_5fd108f9aa242.pdfIn PDF document text
    • http://am-sound.ru/adobe_reader_para_android_apk_uptodownpvpne.pdfIn PDF document text
    • http://bitjoms.xyz/megozujepowezevejilopaxerzmvvj.pdfIn PDF document text
    • http://ejqy.com/sys_platform_is_not_definedijrpn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371536/normal_5fc875dae1c46.pdfIn PDF document text
    • https://tesafugefiwa.weebly.com/uploads/1/3/5/3/135318727/xenev.pdfIn PDF document text
    • http://runolive.com/74834990703lv3ft.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366366/normal_5ff964e728a2a.pdfIn PDF document text
    • https://temabodanifow.weebly.com/uploads/1/3/1/4/131454916/zanuxajozapufun.pdfIn PDF document text
    • https://cdn.sqhk.co/lubometusoz/VoggghT/jumoxubutijotonifujep.pdfIn PDF document text
    • https://fogufufizanalu.weebly.com/uploads/1/3/0/8/130813948/kasufebatiril.pdfIn PDF document text
    • http://alcozerox.com/9071313411129jne.pdfIn PDF document text
    • https://cdn.sqhk.co/xonipavu/jgqibhb/telegram_download_for_pc_softonic.pdfIn PDF document text
    • http://kzrovk.xyz/the_plague_albert_camus_free8a8m0.pdfIn PDF document text
    • https://cdn.sqhk.co/naxenunovus/BhdxKdL/dynamons_world_download_uptodown.pdfIn PDF document text
    • https://cdn.sqhk.co/kewudomavave/jf3jcji/80768337353.pdfIn PDF document text
    • http://appletopshop.ru/agenda_21_2030_map3z6le.pdfIn PDF document text
    • http://blog-millionaire.buzz/hp_officejet_6500_wireless_printer_priceiwgka.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371244/normal_6012e6bf5e50f.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/wewiro/cessna_340a_ram_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/picsart_mod_version_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/fha_appraisal_guidelines_comparable_sales.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_off0000f390.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF390 5640 bytes
SHA-256: 5ca8486edb3919e47c35f7d13e3e9ab740f77233d2efbbf31c436e35c90e358d
font_01_sfnt_off000106d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106D4 10240 bytes
SHA-256: d6595887db78fe4e309c30420f35df65bc7333441e067dab2301669e369bdb46