Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e152f15481dd809…

MALICIOUS

PDF

86.5 KB Created: 2021-03-14 13:34:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 2fa1bd51b566caf56bd14fcbc06aa518 SHA-1: 26aa33da7752626dc08e33b5fba94b5b6268f583 SHA-256: 2e152f15481dd809cd47c27c77747195bb17b05a64dd9b882fcd040223269121
126 Risk Score

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 0.9950

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://resalured.ru/strik?utm_term=breville+bov800xl+price PDF link annotation
    • http://bagagom.22web.org/what_do_you_understand_by_design_response_spectra.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451561/normal_5fff41950eae1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443598/normal_5fc93f40967a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375521/normal_602d1d072f8ce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392442/normal_5ff78cbd50891.pdfIn PDF document text
    • http://palaxofivuleduj.medianewsonline.com/maxevirijejeduzazulit.pdfIn PDF document text
    • http://zedateve.mypressonline.com/18160054161.pdfIn PDF document text
    • http://mufosubofamar.mywebcommunity.org/warcraft_2_full_movie_in_hindi_dubbed_download_filmyzilla.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481282/normal_603260119ed64.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://s3.amazonaws.com/votawawo/rizuga.pdfIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/how_to_connect_turtle_beach_stealth_500p_to_ps4_slim.pdfIn PDF document text
    • http://pebomotixot.myartsonline.com/how_to_write_my_professional_accomplishments.pdfIn PDF document text
    • https://s3.amazonaws.com/lijulijowivaze/jufiluzogovenemekaxerekeb.pdfIn PDF document text
    • https://33b7cf8b-1cb2-46d9-9063-17e97cba5e80.filesusr.com/ugd/9edd50_9424c63922f349f9acebeb7f42a01ffb.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b00f5115-eee0-4567-a68a-51b6688f77df/47819970845.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/understanding_body_language.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20ec067d-c66b-41f7-aa43-00c917aa891e/rolling_on_the_floor_cackling.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e41cb4ac-14bf-4489-a6db-278caac3b8b0/boy_scout_handbook_13th_edition.pdfIn PDF document text
    • http://lokemuwebofeg.rf.gd/zovakopelapefoj.pdfIn PDF document text
    • https://fd0ef26f-7b8f-4c91-b3b2-19f7ec93487a.filesusr.com/ugd/4174bf_37a55aa73ff043c485ed6d50de7d00c9.pdf?index=trueIn PDF document text
    • http://dazimosanugep.epizy.com/android_room_database_example_github.pdfIn PDF document text
    • https://48b7024d-7414-4593-b44d-ed892b96ad15.filesusr.com/ugd/3e5db3_22a7a3c8dab44874869423b72dfb742a.pdf?index=trueIn PDF document text
    • http://puligop.epizy.com/17736479604.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/334ad973-2250-4cc4-bb02-fb88bc1e32f3/suwizew.pdfIn PDF document text
    • https://8c805f22-5240-4a8e-9b4d-8499607ff1fc.filesusr.com/ugd/76156b_92f89db969e24a948dc803b0bfaf0cca.pdf?index=trueIn PDF document text
    • https://edb7bb8d-792a-4213-93ec-7f573d37cc74.filesusr.com/ugd/bfd504_a04db2def51f49969420efa8f54d7439.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nokiva/jobim_wave_lead_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/874a6b5e-8262-4b7d-a7fa-bbb6aefd621f/beziz.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_off00010992.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10992 4792 bytes
SHA-256: d8c3e729d810b34ae44d6506dabb2d356da91332117159fe33e4134a63423729
font_01_sfnt_off000119e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119E2 10612 bytes
SHA-256: c7ce0b8966db9bbf40a144c35424c9c27cbabf366e37f210713ac0ed67bd52ab
font_02_sfnt_off00013e16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E16 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333