Malicious PDF — malware analysis report

Static analysis result for SHA-256 c036f9e02c15ade5…

MALICIOUS

PDF

79.4 KB Created: 2021-03-20 13:39:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a780b80aeb30dc41dc9bc55db0458fdd SHA-1: 2582732e80f84612598431a1b3b84eca8782ff95 SHA-256: c036f9e02c15ade52d7b406410495cc6e6fd891f3eeaadbcd43d3a923b2133be
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, suggesting it functions as a link farm for SEO purposes, likely to distribute malware or phish for information. The embedded URLs point to potentially malicious domains, and the document's structure is indicative of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • 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.
  • 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://jumiwimov.ru/123?utm_term=bomber+friends+apk+mod+hack
    • http://kamefutebiwef.mywebcommunity.org/55094169152.pdf
    • https://cdn.sqhk.co/feletitami/jihdjiq/direct_flights_to_hawaii_from_slc.pdf
    • https://cdn.sqhk.co/kopakezoxek/hbejdZy/patrick_app_3d_super_star_free_download.pdf
    • https://cdn.sqhk.co/votexeruwiti/zDjahiK/age_of_empires_strategy_tips.pdf
    • http://bumumapa.mypressonline.com/en_que_consiste_la_propuesta_de_valor_del_modelo_canvas.pdf
    • https://cdn.sqhk.co/xakelafu/0ImSkHO/57920885081.pdf
    • https://cdn.sqhk.co/fubafonu/Z2giIYE/girixipiwomiv.pdf
    • https://cdn.sqhk.co/gifexajed/Jhhbigq/latest_virus_kill_for_android_1.pdf
    • https://cdn.sqhk.co/wujejelot/cRifigF/modern_history_textbook.pdf
    • http://zivozariwusa.22web.org/99235615061.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kofaxafogi.myartsonline.com/fimixovu.pdf
    • https://661c91a2-68a2-4ae3-aaac-ef96b6cc7894.filesusr.com/ugd/b926a8_d6ec7d42c52340da98730568fb948974.pdf?index=true
    • https://uploads.strikinglycdn.com/files/015e660d-4dc0-4f77-9878-1b18117403a0/gijutavavonema.pdf
    • http://zilowovuv.atwebpages.com/magic_chef_mcsdry1s_2.6_cubic-ft_compact_dryer.pdf
    • http://laletanegimiw.epizy.com/mezejeponam.pdf
    • https://36622f5a-5a1b-41a5-aa98-965156e47ac2.filesusr.com/ugd/804ff6_1418fbe4c7a64697b948c1b0752a24f0.pdf?index=true
    • https://uploads.strikinglycdn.com/files/6d32715c-52ef-430b-af92-321e630abfb0/volca_sample_pack_wordpress.pdf
    • http://bifakafuwal.rf.gd/bronchiolitis_journal.pdf
    • http://tipesirufig.epizy.com/difference_between_roku_stick_plus_and_ultra.pdf
    • https://527ed197-5826-4432-9c89-449afa9d705e.filesusr.com/ugd/65ef70_f6a8739bd6684ec897ae781462b662be.pdf?index=true
    • https://bf6af823-cb0d-4ee8-9d5b-4f0b1de5ed24.filesusr.com/ugd/9eb187_6ad62839b8bd4613a0e4f1978f539631.pdf?index=true
    • http://tobavukopipe.epizy.com/waguxazatexuje.pdf
    • https://5984e891-aecd-43e6-866f-efdb297c9c35.filesusr.com/ugd/403565_98056490926649e09aa20b76fee3c872.pdf?index=true
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f64f.bin
98a6c9ae0da7cc490f624138d6a61ceba9180345a854ad0fea365faa079b94ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF64F 5616 bytes
font_01_sfnt_off0001093b.bin
8038fefdacb02d416832856cb5f7067616f13616c8ca2b322645d1fc15744785		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1093B 11404 bytes

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