Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6b3ff343e2334d1…

MALICIOUS

PDF

76.5 KB Created: 2021-02-28 07:39:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 83163e790db3ab5f0ba42f5a9041cedd SHA-1: ed1efe40cdf90d6e9a16fa15b56f1d5ad4e2ba0c SHA-256: e6b3ff343e2334d13c5afbd371257b346a951dea3caf57bb49a18338b1cc987c
186 Risk Score

Malware Insights

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

This PDF file is classified as malicious by ML and ClamAV, and contains a large number of external links, many hosted on disposable domains. The document body is heavily obfuscated but appears to be a lure related to 'Honda lawn mower repair shop near me', likely intended to drive traffic to a link farm. The presence of external URIs and the link farm heuristic suggest an attempt to redirect users to malicious content, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://fokemale.ru/aws?utm_term=honda+lawn+mower+repair+shop+near+me PDF link annotation
    • https://cdn.sqhk.co/gunumiku/a5Li3kI/sevorofupupimeg.pdfIn PDF document text
    • http://artistichomesolutions.com/chameleon_evolution_gamebijcs.pdfIn PDF document text
    • https://cdn.sqhk.co/laruxibut/emjbich/24511173961.pdfIn PDF document text
    • http://miiliioner.xyz/old_school_tattoo_flash_bookktjj3.pdfIn PDF document text
    • https://cdn.sqhk.co/lerapuraroke/j7Fsieq/badofafipuxoxavefafaxud.pdfIn PDF document text
    • https://cdn.sqhk.co/pefisemise/mlhjXVy/bujukapetotudelok.pdfIn PDF document text
    • https://cdn.sqhk.co/vorebilifi/kjiTO8u/27530814912.pdfIn PDF document text
    • https://xokefinodoju.weebly.com/uploads/1/3/5/3/135316617/abe84f.pdfIn PDF document text
    • https://gawokuvaz.weebly.com/uploads/1/3/4/6/134656265/51b33a6ef1442.pdfIn PDF document text
    • http://fineagencyy.com/briggs_and_stratton_675exi_parts_listd7dae.pdfIn PDF document text
    • https://cdn.sqhk.co/koxuzofu/dQjdxij/60489199647.pdfIn PDF document text
    • http://e-devletodeme.net/rolikejozixijipu18nsm.pdfIn PDF document text
    • http://zabemaladameg.medianewsonline.com/zuvevalorene.pdfIn PDF document text
    • http://venira.su/where_can_i_buy_vanity_fair_brasn6agv.pdfIn PDF document text
    • http://abwaab.su/baby_bjorn_bouncer_replacement_partslmv61.pdfIn PDF document text
    • https://cdn.sqhk.co/gusiloxi/fjdpPm7/molovuzikinomajuresepe.pdfIn PDF document text
    • https://cdn.sqhk.co/puvegipuros/HheGDIl/68977811297.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bitujiduruv.myartsonline.com/what_is_the_meaning_of_going_down_the_rabbit_hole.pdfIn PDF document text
    • http://zudupaxub.myartsonline.com/18111867184.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_off0000eee8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE8 5252 bytes
SHA-256: 56c34d78a5e90e840b1a855787e0ca097b265b71aeb707a49e8ce8093c231733
font_01_sfnt_off000100a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100A3 10412 bytes
SHA-256: e9595106ef7e7aab945db02fd02bf0b9106873b753c962f95d28b01f93f4fc59

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