Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e6e703978b3dbc9…

MALICIOUS

PDF

81.2 KB Created: 2021-06-10 08:29:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: f7609873f18c8e03dbe3ba9881e03fea SHA-1: 3e9dea3e608be0eca7058d1fded1c317f4cbe57f SHA-256: 7e6e703978b3dbc963ab437056cb5d4c664695b6387f76fe93c2e4147f0bb099
194 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a phishing lure, specifically disguised as a quote template for Microsoft Excel. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to potentially malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://lozipotod.ru/123?utm_term=quote+template+microsoft+excel PDF link annotation
    • https://xejuxomezul.weebly.com/uploads/1/3/1/6/131637030/25cafd482158e51.pdfIn PDF document text
    • https://ladupizisegi.weebly.com/uploads/1/3/1/3/131380895/banasinoluso.pdfIn PDF document text
    • https://fojevatiseme.weebly.com/uploads/1/3/4/4/134400043/3022449.pdfIn PDF document text
    • https://womogidukiwu.weebly.com/uploads/1/3/4/8/134873304/fiwuvag.pdfIn PDF document text
    • https://nidoziba.weebly.com/uploads/1/3/0/8/130873853/6311338.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451374/normal_601887b7a9ba9.pdfIn PDF document text
    • https://lefitujeledezov.weebly.com/uploads/1/3/6/0/136028835/nekaloxasuz_finujof_pimiwejit_nimunow.pdfIn PDF document text
    • https://makurabun.weebly.com/uploads/1/3/4/6/134651698/xifunosibikiv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491168/normal_6013e7c068e77.pdfIn PDF document text
    • https://xemudimiju.weebly.com/uploads/1/3/4/8/134861016/demez.pdfIn PDF document text
    • https://murozukuzofapu.weebly.com/uploads/1/3/4/7/134716639/juketotanimix-velijuvopu-vaboxivubivu-puwexejajij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425784/normal_604a933ee643d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pebokuvog.pbworks.com/w/file/fetch/144681735/work_attendance_sheet.pdfIn PDF document text
    • http://zixememot.pbworks.com/f/live_streaming_film_avengers_endgame.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3042bfe5-541f-486a-b9d7-5544dfadf5f3/belifenunor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eed48878-6a72-460e-b05a-9ae3f123e8d2/how_to_cook_corned_beef_in_a_roaster_oven.pdfIn PDF document text
    • http://kiwizubid.pbworks.com/w/file/fetch/144887253/famoid_free_like.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/164db101-88f2-40be-8513-62cff91c71c5/94994096837.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bab8612-8c60-4a3a-9f5e-cd8fc14827dc/a_practical_guide_to_contemporary_pharmacy_practice_download.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_off00010093.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10093 5288 bytes
SHA-256: 1df044c96d7adc743b61eb74c55c5842ad94dc7c0e857c415802168be2a4e89c
font_01_sfnt_off0001127b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1127B 10980 bytes
SHA-256: 0b36c9525ed0ce73e262eb8c1b28292025e3ea28d26e8831cebdd3935b4055f5