Malicious PDF — malware analysis report

Static analysis result for SHA-256 68ed01d744e2be20…

MALICIOUS

PDF

83.6 KB Created: 2021-05-28 07:46:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 0695025751ef2ff4bbdded368661920e SHA-1: 94a05f75b7de8a14540c05e787f08e8cedad99e9 SHA-256: 68ed01d744e2be204ba82d6dfb2aa0f52837de71550f79e1c1588ff098ade9c1
186 Risk Score

Malware Insights

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

The file was identified as malicious by ML classifiers and ClamAV, with critical heuristics indicating it is a link farm designed to host external PDF files. The PDF contains numerous links, many pointing to disposable hosting services, suggesting an attempt to distribute malicious content or phish users. No scripts were extracted, but the overall structure points to a malicious PDF designed for initial access via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://waxopudiva.weebly.com/uploads/1/3/4/6/134695928/1753095.pdf In PDF document text
    • https://misapunuzure.weebly.com/uploads/1/3/1/6/131606411/b2e77d3a640b27.pdfIn PDF document text
    • https://gugebizibepowe.weebly.com/uploads/1/3/4/3/134364706/c9f91b5f7984f.pdfIn PDF document text
    • https://mujilaku.weebly.com/uploads/1/3/4/3/134389228/b1934354ad68e.pdfIn PDF document text
    • https://dopolijakom.weebly.com/uploads/1/3/4/5/134527788/2940884.pdfIn PDF document text
    • https://tebelusagunesaz.weebly.com/uploads/1/3/4/3/134318259/39098f6e16f9880.pdfIn PDF document text
    • https://lipixebuz.weebly.com/uploads/1/3/0/7/130740586/toziniw.pdfIn PDF document text
    • https://rapagifetudi.weebly.com/uploads/1/3/2/6/132682686/palurimefororamid.pdfIn PDF document text
    • https://sezorataxij.weebly.com/uploads/1/3/4/6/134600708/basex.pdfIn PDF document text
    • https://zubenori.weebly.com/uploads/1/3/5/3/135394140/fivobopudugagumi.pdfIn PDF document text
    • https://rukepeninosiwul.weebly.com/uploads/1/3/1/4/131406291/8f85fd3fed15d.pdfIn PDF document text
    • https://boxagotogod.weebly.com/uploads/1/3/4/4/134491964/c5a19ccb.pdfIn PDF document text
    • https://nowitijot.weebly.com/uploads/1/3/4/7/134716658/webudefomirane.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
    • http://feedproxy.google.com/~r/wb/ENAH/~3/WboozbXZlIE/wb?keyword=sadlier%20vocabulary%20workshop%203rd%20gradePDF link annotation
    • https://uploads.strikinglycdn.com/files/6a455491-755f-4e81-86db-493ea51bfe58/pharmacotherapy_handbook_10th_edition_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89914960-6bf5-4b80-9b86-1fd21119b2a6/who_was_the_one_who_found_hae_min_lees_body.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09971054-f5bf-4c03-be98-73849375700a/wufunifarovifolud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b961c3f5-d16b-47cb-8119-ccb43fa3d1b8/que_es_bosquejo_de_un_proyecto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73fb56a0-cbe8-4860-9a73-5a4e311ff4bd/sc2_release_date.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23198f56-14a7-435d-9745-14bd6c4cfec3/life_is_short_life_quotes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97d11b48-4ee5-477b-9724-d8c1f5f3c4ee/kedutikunosuleridivipa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf2bd526-09a0-4d90-9895-dcca6428c623/organos_del_sistema_endocrino_y_sus_funciones_de_cada_uno.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e7e70a1-2e3f-4797-b57f-962356a11326/21220528638.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5635d001-52a5-42d2-badb-bcaf19a876fd/3412454275.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21e39e44-0788-4e06-b164-403f9267bb8e/35014040384.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_off0000fa77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA77 5756 bytes
SHA-256: f2ebc40daf0bcf62830bdcd8dd70b18c26123c06a8a640613a01b0829c9eb5e3
font_01_sfnt_off00010e26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E26 10260 bytes
SHA-256: 7c51af58f47316f03c85e67cb05756d9898a1ecd395d36794ff24fde8eac5dd0
font_02_sfnt_off00013108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13108 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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