Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fded09e1e7abad7…

MALICIOUS

PDF

79.7 KB Created: 2021-06-13 16:07:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e721717ecb2c86324fdfce084bbe420 SHA-1: 80a123c4b8f9e26c23f605260e64a8539ac2b3b4 SHA-256: 0fded09e1e7abad73761ce5e7fbc0cea20e98cb64251b787a8c84715aeef964c
216 Risk Score

Malware Insights

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

The PDF contains numerous external links, indicative of a link farm or phishing campaign. The heuristic 'SE_SECRET_RECOVERY_LURE' suggests the document attempts to trick users into revealing sensitive information like recovery phrases or private keys. While no scripts were explicitly extracted, the presence of external links and the nature of the lure strongly suggest a malicious intent to phish or scam users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • 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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pistant.ru/pbw?utm_term=endothermic+exothermic+difference
    • https://gitasojozatoj.weebly.com/uploads/1/3/0/9/130968906/ponon.pdf
    • https://siridadujaxata.weebly.com/uploads/1/3/0/9/130969300/9594356.pdf
    • https://maxafusisiwesu.weebly.com/uploads/1/3/4/6/134688878/palojanem-zanipexa-vagogajo.pdf
    • https://larozosaja.weebly.com/uploads/1/3/7/4/137498930/822083.pdf
    • https://robubafo.weebly.com/uploads/1/3/4/5/134588337/xozugorino-pazavufese-tezefefe.pdf
    • https://jijidiwudop.weebly.com/uploads/1/3/4/4/134481930/fufenekobizov-jaxoxelixekol.pdf
    • https://pojuzalik.weebly.com/uploads/1/3/4/2/134235388/fipuli_xepun.pdf
    • https://sabitilapi.weebly.com/uploads/1/3/5/3/135345374/6959445.pdf
    • https://xagajopudulu.weebly.com/uploads/1/3/4/6/134697977/15120d105e783.pdf
    • https://bimipesetasezi.weebly.com/uploads/1/3/4/0/134017520/nevaze.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://giwupiraride.pbworks.com/w/file/fetch/144667380/alif_ba_ta_tracing_worksheet.pdf
    • http://mamejoniza.pbworks.com/w/file/fetch/144832395/bepawuzenonamemegawapem.pdf
    • https://uploads.strikinglycdn.com/files/b8f24e8d-dda7-4387-9ae0-92000b36f932/zugon.pdf
    • http://sowenux.pbworks.com/f/vector_hile_apk_android_oyun_club_2020.pdf
    • https://uploads.strikinglycdn.com/files/5efcd899-4aee-426a-a3a2-915cc52f4adc/the_exorcist_2016_tv_series_download.pdf
    • https://uploads.strikinglycdn.com/files/3a66770b-c464-4940-820a-526ebeeed5e0/finding_derivative_with_fundamental_theorem_of_calculus_khan_academy.pdf
    • https://uploads.strikinglycdn.com/files/1bf977f3-6f73-4b98-bc11-475b3a733148/cuales_son_los_sintomas_del_covid_asintomatico.pdf
    • https://uploads.strikinglycdn.com/files/e51037d2-0dfa-4583-be68-7f85a9426741/what_is_rule_110.pdf
    • https://uploads.strikinglycdn.com/files/930205e5-2e28-4460-8158-f47ac689837f/how_to_export_garageband_files_as_wav.pdf
    • https://uploads.strikinglycdn.com/files/bcac9e93-8151-4ad5-8fa1-9b7c4d0dce97/sql_server_documentation.pdf
    • https://uploads.strikinglycdn.com/files/3dcbc210-da43-4855-bcb0-393705366f30/bespoke_shoemaking.pdf
    • https://uploads.strikinglycdn.com/files/0918f565-6fc2-4e9f-81d3-fb216edec0a2/lexisizulu.pdf
    • http://xodelow.pbworks.com/w/file/fetch/145213467/20929531529.pdf
    • http://ziludezubeju.pbworks.com/w/file/fetch/144462408/13646211376.pdf
    • https://uploads.strikinglycdn.com/files/a2bff99d-d049-411c-9ec3-ece256aeab80/elect_rachel_van_dyken_ebooks.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec5a.bin
78fd9be34bb485118493e7d6878a68871bfc77dc74f58ffa68b2bcfa2e1cc783
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC5A 4652 bytes
font_01_sfnt_off0000fbf7.bin
94d654f40c0f29c0e0d324898f6d3d0ca1576a76bdc0b8c637702528219a250b
pdf-font-stream PDF embedded font (sfnt) at offset 0xFBF7 11408 bytes
font_02_sfnt_off00012321.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x12321 4324 bytes