Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ddc0d78f6eb3f40…

MALICIOUS

PDF

83.2 KB Created: 2021-06-09 09:50:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 0774e60a8451f504abca220627f8286a SHA-1: a97ce35650c2d73cd85f5192273f89139cf8345f SHA-256: 0ddc0d78f6eb3f40b3097d498872d1af51f170ea8a60e020e4b79eb2715d174e
186 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, characteristic of a link farm designed to direct users to potentially malicious websites. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as phishing and trojan activity. The primary IOC is the URL 'https://infrive.ru/pbw?utm_term=picsart+hack+mod+download', which is likely used to distribute malware or lead to phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 6

  • 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 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.
  • 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://infrive.ru/pbw?utm_term=picsart+hack+mod+download PDF link annotation
    • https://xipazodi.weebly.com/uploads/1/3/4/3/134375507/renirizig.pdfIn PDF document text
    • https://xokapajutubesa.weebly.com/uploads/1/3/4/7/134730315/f3261b31.pdfIn PDF document text
    • https://sekowuwumobof.weebly.com/uploads/1/3/5/3/135394032/1563098.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/c79f3010-c168-4cf7-a61a-01a799dc1a73/how_to_describe_a_beautiful_christmas_tree.pdfIn PDF document text
    • http://jifesepapo.pbworks.com/w/file/fetch/144794577/guwilapevoxivovesaponi.pdfIn PDF document text
    • http://fezosubi.pbworks.com/w/file/fetch/144780768/bayesian_statistics_the_fun_waydrive.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52da6a58-ae29-40fe-a2e5-4dcccca6d1a7/fotolupapolumeribikuvofe.pdfIn PDF document text
    • http://kepodaworo.pbworks.com/f/how_to_use_morphy_richards_microwave_convection_oven.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16c592cc-754b-4739-b545-3238d6258c31/how_to_change_battery_in_brk_670mbx_smoke_alarm.pdfIn PDF document text
    • http://jirofuwaso.pbworks.com/w/file/fetch/144740268/36312187752.pdfIn PDF document text
    • http://betifabito.pbworks.com/w/file/fetch/144921363/gizmo_evolution_mutation_and_selection.pdfIn PDF document text
    • http://juxivos.pbworks.com/f/lyse_palace_pronunciation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fdfe82a-0917-4353-9dd2-4c85c44fcd72/reparojitaregozi.pdfIn PDF document text
    • http://sojakun.pbworks.com/w/file/fetch/144734331/phoenix_force_vs_thanos.pdfIn PDF document text
    • http://mumubib.pbworks.com/w/file/fetch/144413301/82647769637.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8977717b-7fb1-4bf4-8031-0b4f1aa16213/my_maytag_dryer_wont_turn_on.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99f74ca2-0e96-4fda-a7b0-60a75deda9c8/88993227931.pdfIn PDF document text
    • http://muxopal.pbworks.com/w/file/fetch/144440808/26219192627.pdfIn PDF document text
    • http://xojifot.pbworks.com/w/file/fetch/144428934/bufugutoxetaki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c8101e7-dd99-46c5-bc11-d4a19ab84860/what_airline_is_qr.pdfIn PDF document text
    • http://gifavipa.pbworks.com/w/file/fetch/144698451/91932051775.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe1d6604-ab66-49d6-9924-867f1860d20e/rozumazowidojoturominoto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4f06d24-1e7e-4831-8811-6ad72e7def87/9063074448.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_off0000e622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE622 5336 bytes
SHA-256: 6d18338a5f0d67ca26e9e4cad009226641fe800fea9c68988c1e9e4ee0be338a
font_01_sfnt_off0000f822.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF822 2584 bytes
SHA-256: 85df9854c9a698c8f9eebe407dba86cb794fa55e3f7a1287f9bf05ae2026a6a8
font_02_sfnt_off0001032f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1032F 11444 bytes
SHA-256: 825b9406719bfbdc8bb3bcefa10f1aa7a3ab106d5827d61618753bcd608ccb9e
font_03_sfnt_off00012a0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A0B 16080 bytes
SHA-256: 28d5afbff6c2e9e687c0d9657fc0c8653379f131105490b33dc0c12c71f72ad8

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