Malicious PDF — malware analysis report

Static analysis result for SHA-256 017fb35d72861256…

MALICIOUS

PDF

73.0 KB Created: 2021-03-20 18:16:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f74f321df33cab4311f72366611d6e4 SHA-1: 509700735e4f18dbe2d05953136ccd2806bab59b SHA-256: 017fb35d72861256e773d204fc8db3eea3719a17fccb144696348abfbad7f445
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, many of which point to other PDF files, suggesting a link farm designed to direct users to potentially harmful content or phishing sites. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic strongly support this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xezojetit.ru/wix?keyword=peggle+2+magical+masters+edition+trophy+guide
    • http://degazizovudilod.22web.org/pizza_party_flyer_template.pdf
    • http://walolexokesufa.sportsontheweb.net/surah_mulk_with_hindi_translation.pdf
    • https://wonakusoxenim.weebly.com/uploads/1/3/5/3/135340368/26c2c.pdf
    • http://zabolojisag.getenjoyment.net/wesodilabogev.pdf
    • https://zitasiga.weebly.com/uploads/1/3/6/0/136088478/tagijisuvakiv.pdf
    • http://zewamiluwevegif.22web.org/gutofatifeborufasebifije.pdf
    • https://burakatotofok.weebly.com/uploads/1/3/1/8/131871829/rexowafotipepux-xedoranezuxuvus.pdf
    • http://xakovakaxevasul.22web.org/75029021923.pdf
    • https://tirasuvemesamu.weebly.com/uploads/1/3/4/6/134672388/d18efc8e.pdf
    • http://rocketdocs.us/16885955ncjoj.pdf
    • https://cdn.sqhk.co/jemowevu/NAuoAgf/37856152586.pdf
    • https://cdn.sqhk.co/toxinize/eihyBhh/4_pic_1_word_4_letters_cards.pdf
    • http://gisowutuxa.22web.org/amritsar_express_11057_thane_platform.pdf
    • http://superheatbelt.xyz/anselm_grn45gir.pdf
    • https://cdn.sqhk.co/segenoliz/ib2jajf/ms_excel_exam_questions_and_answers.pdf
    • https://cdn.sqhk.co/kikolibub/ihehggj/leguxatokopafa.pdf
    • http://proita.space/california_association_of_realtors_rental_agreement_2020nldrd.pdf
    • http://xutexukoxobofi.mywebcommunity.org/what_to_put_for_hobbies_and_interests_on_a_cv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://navafaju.epizy.com/boise_idaho_map.pdf
    • https://c8070bf9-ed42-4c5d-8eb8-ca35ee70f136.filesusr.com/ugd/d38238_3bcefedec98f434894726a792fe5e583.pdf?index=true
    • https://0c7b1e5d-10e9-4c66-9a64-57e6babc74f3.filesusr.com/ugd/6b59ba_c348e455eb98481a81e8be66c0f0931f.pdf?index=true
    • https://0879403c-3be5-48e4-925f-21334a7d5cfe.filesusr.com/ugd/407fcc_381df7eb21604000b1aaef037b12c468.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df3a.bin
489a532fc23e11749381615b0da922280ffa69f7288d8629fb14b80735c374e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF3A 5724 bytes
font_01_sfnt_off0000f28f.bin
23634c9f8916fd72b2d20a8567710dcb123c5e0fd1260f22147746c389a95013		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF28F 10556 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.