Malicious PDF — malware analysis report

Static analysis result for SHA-256 e70973ba03024e6a…

MALICIOUS

PDF

80.4 KB Created: 2021-03-24 00:41:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 2cb967b369fd6304be873487fed20019 SHA-1: 0764698a1c43b049497da3f9fbf09c12e7cba965 SHA-256: e70973ba03024e6a7ef6b49e5d97e2fbf04b833dfcbf75ada71910b8de6fdbe1
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable hosting services, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing or malware distribution lure, likely leveraging T1059.007 if active content is present, and T1566.001 as the likely initial access vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://mezovuduw.ru/123?utm_term=game+mobile+rpg+offline PDF link annotation
    • https://pixipemojawipe.weebly.com/uploads/1/3/4/4/134459682/funedozutalopoluj.pdfIn PDF document text
    • https://nesipemuwazona.weebly.com/uploads/1/3/4/8/134881126/5879105.pdfIn PDF document text
    • https://posoxunek.weebly.com/uploads/1/3/4/4/134460252/tanigirepov.pdfIn PDF document text
    • https://xudixakutax.weebly.com/uploads/1/3/0/7/130776611/kakaxivag.pdfIn PDF document text
    • http://tigibisolefora.mygamesonline.org/fegisoguwapabog.pdfIn PDF document text
    • https://cdn.sqhk.co/fufitefan/dhaYjfe/40548596636.pdfIn PDF document text
    • https://cdn.sqhk.co/ruvajuvewuj/gifijge/3d_home_design_games_online_free.pdfIn PDF document text
    • https://sevakozo.weebly.com/uploads/1/3/4/6/134677934/c9d59de14.pdfIn PDF document text
    • https://zerimesatevig.weebly.com/uploads/1/3/4/8/134879836/6429722.pdfIn PDF document text
    • https://zetogamoxaten.weebly.com/uploads/1/3/4/6/134698061/jeboketakunip_xizepinif_kapafewinufe_pudebudax.pdfIn PDF document text
    • http://gugelomem.22web.org/17649008957.pdfIn PDF document text
    • http://viteroludobano.mypressonline.com/radere.pdfIn PDF document text
    • https://cdn.sqhk.co/xugiwatokax/48OeibQ/beach_buggy_racing_apk_mod_android_1.pdfIn PDF document text
    • https://cdn.sqhk.co/pedajobu/fgfiiij/exploration_definition_environmental_science.pdfIn PDF document text
    • https://gunajogozezulom.weebly.com/uploads/1/3/5/3/135385825/fokuraremaxetejute.pdfIn PDF document text
    • https://wifadesar.weebly.com/uploads/1/3/5/3/135345928/xefewemuwewo-witugewipaxa.pdfIn PDF document text
    • https://cdn.sqhk.co/gagunewatevo/giGifgj/clubhouse_restaurant_bardmoor.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://moxutomib.rf.gd/zawivoxikowisure.pdfIn PDF document text
    • http://zunimesigo.rf.gd/argala_stotram_in_telugu_audio.pdfIn PDF document text
    • http://supuwevul.atwebpages.com/sample_beekeeping_business_plan.pdfIn PDF document text
    • http://nonavijewiw.epizy.com/gokukevidapipi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF139 4920 bytes
SHA-256: bdc25c281d32733eef40fb24d5cdbeddbcadca0241adc7dd3bdadce2709e00cf
font_01_sfnt_off000101d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101D4 10600 bytes
SHA-256: d5ed0561bce7a36d8006e1408b51ba20adfe3e3c438b77ebf4fb744d1c479d5d
font_02_sfnt_off000125e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125E6 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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