Malicious PDF — malware analysis report

Static analysis result for SHA-256 6894c7a2e88900d5…

MALICIOUS

PDF

73.6 KB Created: 2021-03-23 00:09:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 02b915fb469799ed3b3329a8f7f76645 SHA-1: 49e135be8f455d02cacc47e41bf24473e776cbde SHA-256: 6894c7a2e88900d51d2019c89c074e2695516ae45484f2271bc5e31f0a00610b
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm or phishing operation. The document body, though heavily obfuscated, appears to be a lure related to a specific manual, directing users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://baarspo.ru/wix?keyword=ford+focus+mk1+haynes+manual+pdf PDF link annotation
    • http://fisareboveda.getenjoyment.net/menokotupesawezo.pdfIn PDF document text
    • http://bodaweziwov.mypressonline.com/xiramajumumebegomijuvafa.pdfIn PDF document text
    • http://tixesikixux.mygamesonline.org/80538414508.pdfIn PDF document text
    • https://cdn.sqhk.co/jogepirar/mibidKM/smart_assistant_app_download.pdfIn PDF document text
    • https://tefifegewa.weebly.com/uploads/1/3/4/3/134335978/wugoketanulodidonon.pdfIn PDF document text
    • http://witikotuxigere.scienceontheweb.net/71404295922.pdfIn PDF document text
    • https://cdn.sqhk.co/ruxuvedije/Y2NxLeC/army_extreme_car_driving_game_download.pdfIn PDF document text
    • http://tofotibuwul.sportsontheweb.net/67203151607.pdfIn PDF document text
    • http://katipef.medianewsonline.com/ordinal_and_cardinal_numbers_in_english_exercises.pdfIn PDF document text
    • https://cdn.sqhk.co/leluforeref/xIwiYha/52001666365.pdfIn PDF document text
    • https://patoduwewoz.weebly.com/uploads/1/3/1/4/131483118/9230040.pdfIn PDF document text
    • https://cdn.sqhk.co/ruvonusebex/iWaKH59/bike_wheel_size_age_chart.pdfIn PDF document text
    • https://cdn.sqhk.co/lomekojop/hlmpgho/xifuvusimet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://gegurobaz.myartsonline.com/anthropology_syllabus_for_upsc_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/blog_de_superheroes_reportajes.pdfIn PDF document text
    • https://229c3593-bb94-4e5d-9b9f-ca3747df48ef.filesusr.com/ugd/145364_8b9637c3d13a4631840ab78c56b0ca54.pdf?index=trueIn PDF document text
    • https://de2ee6d5-caaa-4265-b15c-40100ab77d99.filesusr.com/ugd/d43733_0b85ea32b9884fdeb3b9e55e2306f909.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fizaxo/wesanejej.pdfIn PDF document text
    • http://nukilaba.myartsonline.com/jobs_on_american_bases_in_germany.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/pogiketamulopimaxoxus.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/87600221890.pdfIn PDF document text
    • https://cad90261-f038-4e8a-b384-2e0e37e6cb8c.filesusr.com/ugd/4c4e45_18b7492e09f44983ae063dcbde7035f8.pdf?index=trueIn PDF document text
    • https://1cdd1dcb-54a5-4750-95ad-c4cce9a68cd1.filesusr.com/ugd/1e32c2_27a74f1661f149819304c0ba6c561371.pdf?index=trueIn PDF document text
    • http://kapowuxivi.atwebpages.com/boxipovifosa.pdfIn PDF document text
    • https://4cf6c2b4-cd84-4b73-83b1-bf7f441162b2.filesusr.com/ugd/e50c99_7aeb0acb0ed34b24a30da59db94af510.pdf?index=trueIn PDF document text
    • http://gavawekib.myartsonline.com/core_java_course_syllabus.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5CC 5324 bytes
SHA-256: 7d0ca934b856f187943fa1e56486bf438f561b900dc6b62a97c45d1dec4dc213
font_01_sfnt_off0000e7c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C6 10252 bytes
SHA-256: 927a3e34e88feeb01a56aa32d76e8dc00fa906e6107391bb08e771341318aa8f
font_02_sfnt_off00010ab2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AB2 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333