Malicious PDF — malware analysis report

Static analysis result for SHA-256 022d17fe1a99af45…

MALICIOUS

PDF

88.1 KB Created: 2021-01-27 11:39:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93d103e616cff196620aca215fe714a2 SHA-1: b69f2bafbd310d4bc0d32eed4acbc0e1b791f05a SHA-256: 022d17fe1a99af4556a18db884fceecc7aeddab676596cc2b11ec61d5e939ee4
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many pointing to disposable hosting and link farms, indicating a phishing or redirection scheme. The ClamAV detection and ML classifier strongly suggest malicious intent, specifically identified as Pdf.Phishing.Trojan. While no scripts were explicitly extracted, the PDF structure and embedded URIs are consistent with techniques used to redirect users to malicious sites, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • 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 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://jacksth.ru/123?utm_term=ergocraft+ashton+l%2527shaped+desk+with+hutch
    • https://pesasujax.weebly.com/uploads/1/3/4/8/134882000/nofixipagimewu-jinaduwoduka.pdf
    • https://cdn.sqhk.co/lazujanaziri/fmhcAic/sodosarebo.pdf
    • http://mandarins.space/pacific_energy_fireplace_insert_partswzv9y.pdf
    • http://mydenverneighborhoods.com/zogusopesobeobh15.pdf
    • https://lobusuzagoti.weebly.com/uploads/1/3/4/4/134470260/gesuvu.pdf
    • https://renobikedasel.weebly.com/uploads/1/3/4/8/134897329/vedaxideja.pdf
    • http://samettemiz.xyz/vegejatolirr3yk6.pdf
    • https://firulasimasib.weebly.com/uploads/1/3/0/9/130969438/23371d1bb35c.pdf
    • http://zajowidased.iblogger.org/basic_english_grammar.pdf
    • https://zikegebuner.weebly.com/uploads/1/3/4/8/134856814/4f1448cbea5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • http://www.daltonmaag.com/
    • http://dekifovep.epizy.com/questions_and_answers_about_animals_usborne.pdf
    • http://wopaxigaromuf.epizy.com/zoxevukogolopeliwan.pdf
    • http://xovijoj.epizy.com/3737198591.pdf
    • http://zaxowudupa.rf.gd/89593116033.pdf
    • http://tuzipani.rf.gd/ankhiyon_se_goli_maare_song_pagalworld._io.pdf
    • http://patesosiw.epizy.com/kebakusetumigefabejag.pdf
    • http://gipipirerogarul.rf.gd/76127514586.pdf
    • http://zifasodokid.epizy.com/ashampoo_burning_studio_16_crack_free.pdf
    • http://mibofive.epizy.com/world_economic_forum_global_competitiveness_report_dataset.pdf
    • http://kenamumiv.rf.gd/34909068981.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
    • http://www.gnu.org/licenses/gpl.html
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2e4.bin
ff96964853e59530902afc5714adbf69387d96e8d4c25b7578bc1beff847324c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E4 5448 bytes
font_01_sfnt_off0000f56f.bin
4910d0177da9f60ecc92c13a34fae8c5c38ffafb9e4e22a3c3fd987548b79157		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF56F 6148 bytes
font_02_sfnt_off00010550.bin
e882038f6a3a43c68999dee41eb8bfbe445be350f2e844766dc96bfcb04e3e52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10550 11532 bytes
font_03_sfnt_off00012cb9.bin
581c0268a3cc9df95828ceb030693f64bcb03969c1cab585f80954d7fb3b146d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12CB9 16204 bytes
font_04_sfnt_off00014209.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14209 4324 bytes

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