Malicious PDF — malware analysis report

Static analysis result for SHA-256 267e9419477da0f5…

MALICIOUS

PDF

84.6 KB Created: 2021-03-18 19:59:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 5841465b6324d22357d295e443c2aa1b SHA-1: 8f35f35866fa7478ffdd53d365cf1a9a94df8393 SHA-256: 267e9419477da0f5b0f4f54883912a5ee4861c8fa93387aa13168899eb9bd6eb
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains a large number of external links, many pointing to disposable domains, suggesting a link farm or SEO spam operation. The document body, though heavily corrupted, contains keywords related to maps and application names, which are likely used as lures. The primary attack pattern involves directing users to malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://vilenefex.ru/award?keyword=chiang+mai+old+city+map+pdf PDF link annotation
    • http://luxasireku.sportsontheweb.net/wagoregojitod.pdfIn PDF document text
    • http://zobotalemogi.sportsontheweb.net/ue_boom_2_mit_pc_verbinden_windows_10.pdfIn PDF document text
    • https://mewurotimopu.weebly.com/uploads/1/3/1/3/131381658/4a5e57cd55.pdfIn PDF document text
    • https://bixavovene.weebly.com/uploads/1/3/0/7/130775743/12c112ea2e76ab.pdfIn PDF document text
    • https://xoburorabusu.weebly.com/uploads/1/3/0/7/130738623/f7124829a.pdfIn PDF document text
    • https://wesafave.weebly.com/uploads/1/3/4/3/134307961/jerek.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cfecb619-c0f5-418d-ae9d-b1147643389f.filesusr.com/ugd/4cd51e_39830ea84edd428cb8f39467201d99b8.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/950e18e2-1336-47b5-b02a-948caf30709f/hp_photosmart_5510_carriage_stuck_to_right.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c3ef6f0-2748-4ce1-924f-fa5bff34f263/28046951421.pdfIn PDF document text
    • https://3c45aaf8-24f3-4cde-9773-cf44a0a970d3.filesusr.com/ugd/ae7d54_3bb016edb4da41ef9d835f6ee83e07b9.pdf?index=trueIn PDF document text
    • https://1fae3a98-13b7-4b95-b1f0-1fbd1b7b0aee.filesusr.com/ugd/1da05d_f329c04ee8074b6bbf9de5a635395884.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/23f8b177-d8df-41ce-9ceb-2c71aa561783/beats_solo_wireless_2_one_side_not_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85698ee0-ee3b-4d3e-a7a2-432cc1537337/lixerenimilovuxene.pdfIn PDF document text
    • http://nununad.myartsonline.com/briggs_and_stratton_550ex_carburetor_parts_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a369054-976a-4847-9203-5716e149c60c/92519227015.pdfIn PDF document text
    • http://tuxabatadifu.onlinewebshop.net/70357945634.pdfIn PDF document text
    • https://044ec7df-721b-4788-b209-87474a3fcb06.filesusr.com/ugd/60ffa2_54aa71b46c034f85a73de6fac64b3f1e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa8cd405-bcc8-4e7e-a14a-6dca98fece2c/pogakafimex.pdfIn PDF document text
    • https://80172413-d145-4b71-b7cf-4a007d76ad29.filesusr.com/ugd/cacfd7_d863eaea17c6472eab048aba028cb106.pdf?index=trueIn PDF document text
    • https://19f621d4-ab03-49b5-bf1d-c78de40104d4.filesusr.com/ugd/bc84a3_f4c30db8f0b64363b70857b00f106de4.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5855f08e-ec51-464d-a366-39481f438862/2_step_equations_worksheet.pdfIn PDF document text
    • https://06ebba1c-c738-45d4-b58d-83edbdcc9420.filesusr.com/ugd/b14caa_e6b9bdf1aa214b5fbfdd6522b1d4a26b.pdf?index=trueIn PDF document text
    • https://ee897e78-a157-4eb5-8a47-d615096087a2.filesusr.com/ugd/113e89_6dbb80b0abfc42f5b3c179395b7f9c50.pdf?index=trueIn 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_off00010e8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E8D 5300 bytes
SHA-256: 55e108eaa139ad061a7977cf4b22d1ad3a61c7ba918bb8a015ac6df8f790b386
font_01_sfnt_off0001207e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1207E 10640 bytes
SHA-256: eef2923f5278cc5387440a80a88d7493b393570d64c99343a8e891937380a797

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