Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7e43e680586b869…

MALICIOUS

PDF

76.0 KB Created: 2021-03-24 06:42:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 6a315c6af86d07f05bf07c0b7fc152dd SHA-1: 8099c353bc9adfb6c18750eeceffe016931cf5f8 SHA-256: d7e43e680586b8694cd5a470e4591b62f09afdb9048eb449320b13c82affc04e
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://zajinet.ru/strik?utm_term=pentax+k30+vs+k7 PDF link annotation
    • https://xobijuveja.weebly.com/uploads/1/3/1/6/131606615/weduribefata-gejej.pdfIn PDF document text
    • http://slmit.space/city_racing_3d_pcam838.pdfIn PDF document text
    • http://presentinsta.site/how_to_clean_a_keurig_mini_with_vinegar5mvwg.pdfIn PDF document text
    • http://lamejix.scienceontheweb.net/adobe_acrobat_editor_free_download_for_windows_8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487647/normal_604d2634577bf.pdfIn PDF document text
    • http://goshop32.site/672306048109ucon.pdfIn PDF document text
    • https://moforikegumiret.weebly.com/uploads/1/3/2/6/132680993/2102682.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370088/normal_5fcd0fd1d4661.pdfIn PDF document text
    • http://probkin34.xyz/megan_fox_net_worthtj71k.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421215/normal_5feb8af135d02.pdfIn PDF document text
    • http://1gusevshop.space/31559270641izvl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393483/normal_600fada8e90b3.pdfIn PDF document text
    • http://vijexibat.mywebcommunity.org/canon_eos_rebel_t5i_lens_compatibility.pdfIn PDF document text
    • http://netolenogafa.getenjoyment.net/3437603126.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5caeb1c-5181-4eb5-9862-7072938c6ab4/linux_command_to_check_disk_space_percentage.pdfIn PDF document text
    • http://todidetiped.onlinewebshop.net/innumeracy_john_paulos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a41eec74-bbc8-489e-a615-cad30e776676/zagarexudarufugeratus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0396219e-deea-412e-b17c-f9a2d6ea99a8/61086242641.pdfIn PDF document text
    • http://marurutefa.atwebpages.com/vidator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a069c2e-408c-4498-84e3-9866236d90e8/star_trek_2009_song_car.pdfIn PDF document text
    • http://merapenerabari.myartsonline.com/caballo_de_troya_tomo_1.pdfIn PDF document text
    • http://sewujajapivix.onlinewebshop.net/suwixatujeruxipuga.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_off0000ecd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD2 5132 bytes
SHA-256: bc393ab2f5b8523c9a2a1efc14fc061b1147f4619eb9acd8bb1dd3228ff4fddf
font_01_sfnt_off0000fe70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE70 10700 bytes
SHA-256: a21666b939e2f0887eb263dea3e497281b973b108d2bc640639a13d58d2d6a79

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