Malicious PDF — malware analysis report

Static analysis result for SHA-256 79c719deebf90736…

MALICIOUS

PDF

101.2 KB Created: 2021-03-17 13:59:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: a52d1f66d3b13ed12d698b2226b4527c SHA-1: 17dde13812c3663b0517f390c4345e568785f1c6 SHA-256: 79c719deebf907367eb954d697337774e85117dd9120eb5ff3bc1bed20fb0356
126 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a malicious domain, likely to deliver a payload or phish for credentials. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body and extracted URL suggest a lure related to game modifications.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9890

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://xezojetit.ru/wix?keyword=grand+chase+mod+apk+1.29.7 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369143/normal_6049772e4a8e4.pdfIn PDF document text
    • https://sitoluvumoroge.weebly.com/uploads/1/3/4/7/134762666/595631.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417046/normal_60492f2a43fba.pdfIn PDF document text
    • http://zofunubesosena.mypressonline.com/telugu_calendar_2020_free_download.pdfIn PDF document text
    • http://pawavigim.22web.org/eragon_2_movie_download_in_tamilrockers.pdfIn PDF document text
    • http://vowujebotoza.mywebcommunity.org/24011938880.pdfIn PDF document text
    • http://pobadabodoz.scienceontheweb.net/citation_machine_mla.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414173/normal_600b388f8a135.pdfIn PDF document text
    • https://filukekab.weebly.com/uploads/1/3/4/4/134478490/dodeferubur.pdfIn PDF document text
    • http://gexopidikimo.mygamesonline.org/the_crown_season_3_episode_8_wikipedia.pdfIn PDF document text
    • https://gunagejosiva.weebly.com/uploads/1/3/0/7/130738835/7f64aee840c1b1.pdfIn PDF document text
    • https://nimivisedasefu.weebly.com/uploads/1/3/1/0/131070972/lewozabivoke.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490523/normal_6051b3e31ba9f.pdfIn PDF document text
    • http://vitebim.22web.org/sistema_politico_definicion.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e4fd80c-4e14-4836-8b53-3a1e57f41f16/fekifovavadegujig.pdfIn PDF document text
    • http://tufobiwileke.rf.gd/51244419711.pdfIn PDF document text
    • http://dukejujegu.epizy.com/ppsspp_anime_games.pdfIn PDF document text
    • http://zatorir.epizy.com/dimatop.pdfIn PDF document text
    • http://gugefojekasarul.epizy.com/relve_bharti_2019_online_form_date.pdfIn PDF document text
    • http://rejizupufuxetib.rf.gd/brief_history_of_ottoman_empire.pdfIn PDF document text
    • http://vutevesofu.rf.gd/nonconformist_crossword_puzzle_answer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7276be4f-f39f-494c-be8d-0ab98dcd2750/what_is_the_best_aperture_for_night_photography.pdfIn PDF document text
    • http://koxusaje.epizy.com/91685459014.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76ee06d4-5b4c-4fd3-ac06-81823233b382/we_the_kings_sad_song_lyrics_youtube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/147f03ea-29a8-4752-9bff-258bd0788144/black_boyfriend_jeans_fashion_nova.pdfIn PDF document text
    • http://mubodadekutaxim.atwebpages.com/casio_ct_x700_price_in_pakistan.pdfIn PDF document text
    • http://ravojetejevigim.epizy.com/bowurabudigadovafomerag.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ecac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECAC 18752 bytes
SHA-256: 4454067197268743e5760c7fb4a87630d8c21e09c51202e37de98c76161c151b
font_01_sfnt_off0001247f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1247F 5828 bytes
SHA-256: 375cfb19b75991c26680c68710ef9a3330d711dd8eeed76581ae42b138f38c06
font_02_sfnt_off00013836.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13836 17280 bytes
SHA-256: ff2bd80ae96ae0cfb137f62a84e2a0bd32b768169e20218627bd6cfa6bff1602
font_03_sfnt_off00016e52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16E52 16396 bytes
SHA-256: e5b535b9ee8305c04da4939b6540a5fbe5ffbebe98d637f41567f6d11fe29499