Malicious PDF — malware analysis report

Static analysis result for SHA-256 e86852a80817d24c…

MALICIOUS

PDF

84.4 KB Created: 2021-03-10 18:51:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: f98f65639a066ce092fcd02320fea357 SHA-1: f09f63b529280cdcff72b4aed4b9d27025e4eaf9 SHA-256: e86852a80817d24c4dc360e7731e9192ce7ca315168e37752748a35d8a5576d6
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating it likely contains malicious content. It contains numerous embedded URLs, with a primary one pointing to 'https://mezovuduw.ru/wix?keyword=feudalism+and+manorialism+dbq+answers', suggesting a phishing or scam attempt by impersonating search results. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this by indicating the PDF is part of a link farm on disposable hosting, designed to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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/wix?keyword=feudalism+and+manorialism+dbq+answers PDF link annotation
    • https://zajoralesame.weebly.com/uploads/1/3/0/9/130969459/6841046.pdfIn PDF document text
    • http://gefakusudob.22web.org/british_council_ielts_academic_reading.pdfIn PDF document text
    • https://gamevuwi.weebly.com/uploads/1/3/4/5/134525912/tebiben.pdfIn PDF document text
    • http://xikapajami.mypressonline.com/79255841570.pdfIn PDF document text
    • http://vetebozo.mypressonline.com/66299787223.pdfIn PDF document text
    • http://cabinetsop.xyz/jolipubesapaguwurobani5win4.pdfIn PDF document text
    • http://zisezamerares.mygamesonline.org/dominos_burger_sauce_ingredients.pdfIn PDF document text
    • http://kepukarob.sportsontheweb.net/meditations_marcus_aurelius_free.pdfIn PDF document text
    • http://about-fb-support.com/whirlpool_induction_stove_manual168g4.pdfIn PDF document text
    • http://naturaitalia.space/dupavinojizetizn2qkh.pdfIn PDF document text
    • http://sesalon.xyz/78767109896p2uoy.pdfIn PDF document text
    • http://detonic-ro.website/harsh_or_insensitive_crossword_answer0y7pv.pdfIn PDF document text
    • http://nowukusox.mypressonline.com/where_can_i_buy_husqvarna_parts_near_me.pdfIn PDF document text
    • http://pepujolajerikur.66ghz.com/28322376549.pdfIn PDF document text
    • http://form-lnstagramcopyrightservices.com/xufudig8nkfo.pdfIn PDF document text
    • http://zawugexoj.22web.org/astro_on_the_go_di_android_box.pdfIn PDF document text
    • http://trokot-new.online/bozetojitivujazabijirupibp3.pdfIn PDF document text
    • http://custits.space/xiwexodigunnibf.pdfIn PDF document text
    • http://mon-compte-cmb.best/96085285241qqx9g.pdfIn PDF document text
    • http://counterman.ru/de_vermis_mysteriis_deutsch8536r.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://pababevo.epizy.com/coffee_meets_bagel_premium_apk.pdfIn PDF document text
    • http://vimedunofonuw.rf.gd/aviation_academy_leeds_uniform.pdfIn PDF document text
    • http://julidami.rf.gd/six_ideas_that_shaped_physics_solutions_manual.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_off0000fd91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD91 5084 bytes
SHA-256: 68bdc954ca8700c5154f9c243daa2f4a6fcb5afae189999953127872745bb67e
font_01_sfnt_off00010ec3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EC3 11788 bytes
SHA-256: 97bb52774e69585eae76d47bc265a3cb2e2303ac2c654447ca968e6b16893566
font_02_sfnt_off000135ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135EF 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2