Malicious PDF — malware analysis report

Static analysis result for SHA-256 87d25206ffd68e6c…

MALICIOUS

PDF

80.4 KB Created: 2021-03-02 18:44:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8a1fdc00e9faa270cbcb49b337bc69e5 SHA-1: d16018a5514d0d416000dfff1ce6575d21909a59 SHA-256: 87d25206ffd68e6c677b9d923cb5ff8a21510366c8ae4583117b7a76e2993aab
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://dugedepap.ru/123?utm_term=boss+ve-20+user+manual PDF link annotation
    • http://nogurufegu.mygamesonline.org/hoover_floormate_spinscrub.pdfIn PDF document text
    • http://fotubobuwenapu.scienceontheweb.net/premiere_pro_plugins_free_download_for_mac.pdfIn PDF document text
    • http://wwbook.org/89704514492azt7j.pdfIn PDF document text
    • http://lamejix.scienceontheweb.net/how_to_make_the_armour_of_god.pdfIn PDF document text
    • http://skidki-day.shop/74125932585ffmxo.pdfIn PDF document text
    • https://cdn.sqhk.co/xovepejegosi/c1TUL6l/empire_total_war_politics_guide_france.pdfIn PDF document text
    • http://jopagozopive.medianewsonline.com/fujujozulifupuw.pdfIn PDF document text
    • http://lukisasore.mywebcommunity.org/why_recycling_is_important_persuasive_speech.pdfIn PDF document text
    • https://cdn.sqhk.co/rorajakura/d5iiPhf/frases_del_arte_de_la_guerra.pdfIn PDF document text
    • https://cdn.sqhk.co/zerurukoraju/8FzIbYI/lipusuruteketa.pdfIn PDF document text
    • https://cdn.sqhk.co/nivavepe/aAbgd3F/701908806.pdfIn PDF document text
    • http://motivawka.online/58968381445ikcet.pdfIn PDF document text
    • https://cdn.sqhk.co/romekeka/eZKZaMa/giboguxugifemawemowudidi.pdfIn PDF document text
    • http://bostpolamos.site/800035538617i3jb.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwufupi/ifjjghW/retro_city_rampage_dx_wii.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sogivuwe.onlinewebshop.net/17463713515.pdfIn PDF document text
    • http://vujapoguxesak.myartsonline.com/baserimizulapaxituga.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/vissani_6_bottle_wine_cooler_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/15406066190.pdfIn PDF document text
    • http://zevesijuduma.atwebpages.com/picostation_m2_setup_as_repeater.pdfIn PDF document text
    • https://s3.amazonaws.com/doxifuba/flobots_handlebars_song.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD68 5244 bytes
SHA-256: b817ac82f09e4d2b3b1a2dc712b36c2b601a1045507ec719e5a5a5dd9aed61ad
font_01_sfnt_off00010f36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F36 10940 bytes
SHA-256: 8d84c53498303442ec321be1b69256fd3c90cd37590c303c0c4e0939bf7321c4

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