Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed5e6d610fd75827…

MALICIOUS

PDF

83.0 KB Created: 2021-03-14 02:08:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 9ab817d4deb71662b66fa761786e869b SHA-1: d40adf8b6c000c6ed14a00aa4484ff8647890abe SHA-256: ed5e6d610fd758270c328a004655161e89a33cf9e84f0d4e69ac19827efd2c6e
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, many pointing to disposable hosting, suggesting a link farm or phishing operation. The primary URL, 'https://mezovuduw.ru/wix?keyword=chocolate+great+danes+puppies', is presented as a search result, indicating a lure to a potentially malicious website. The ML classifier and ClamAV detection strongly support the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://mezovuduw.ru/wix?keyword=chocolate+great+danes+puppies PDF link annotation
    • https://xasuzetevoke.weebly.com/uploads/1/3/2/6/132681443/doxuse_puwifagumekil.pdfIn PDF document text
    • http://zolomakowifop.iblogger.org/bergey_s_manual_of_systematic_bacteriology_volume_1.pdfIn PDF document text
    • https://tumulole.weebly.com/uploads/1/3/6/0/136054957/tobotazofewem.pdfIn PDF document text
    • https://disesusobabetom.weebly.com/uploads/1/3/0/8/130814900/6664cb9f.pdfIn PDF document text
    • https://tixedasuke.weebly.com/uploads/1/3/5/9/135979549/gijobow_repufozoxiwaze_tejajekesatotek_rofaguxefetenis.pdfIn PDF document text
    • https://biwamuneluzotip.weebly.com/uploads/1/3/2/6/132696598/602e14b1b.pdfIn PDF document text
    • http://gekenig.mywebcommunity.org/pioneer_super_tuner_3d_price.pdfIn PDF document text
    • https://viwosakizipisot.weebly.com/uploads/1/3/5/3/135321869/bekugafofusukifupe.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
    • https://uploads.strikinglycdn.com/files/8490113b-3639-48f0-9937-a1b2e1b1942a/grundig_satellit_750_for_sale_uk.pdfIn PDF document text
    • http://zupagume.rf.gd/chakra_balancing_healing_guided_meditation.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/74490430668.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/afl_finals_format.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/38708921607.pdfIn PDF document text
    • http://wobadumiravolu.atwebpages.com/47361106301.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0c39ef7-5abf-414d-8ce4-53650feb9213/troy_bilt_2700_pressure_washer_wont_start.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_off0000f7a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A1 5240 bytes
SHA-256: ee08f68f5993067ec96954afd2c78916f305da850065703dc8876979810fe538
font_01_sfnt_off00010963.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10963 11052 bytes
SHA-256: ec1ac11952cbcf90614c16da393d6a6b3ba50bd939f86881d5062763f39cfe64
font_02_sfnt_off00012f34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F34 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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