Malicious PDF — malware analysis report

Static analysis result for SHA-256 03295da04ab8b922…

MALICIOUS

PDF

82.6 KB Created: 2021-03-24 11:35:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 19ef84a2affd3729f7eea69d2adddeae SHA-1: 9f42f481679f3587b9e75d8959039f61cb1550c2 SHA-256: 03295da04ab8b92246e8e4527435b7b48919e4c2922a84e49cf9f10bd47f7708
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a primary one pointing to a suspicious domain 'botokaw.ru' disguised as a guitar chords PDF. Heuristics indicate it's a link farm on disposable hosting, and ClamAV detection confirms it as a phishing/trojan. While no scripts were directly extracted, the structure and URL usage strongly suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://botokaw.ru/award?keyword=acordes+de+canciones+faciles+para+guitarra+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4447098/normal_60179ed2cac91.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384030/normal_5fdf56fc1aa72.pdfIn PDF document text
    • https://cdn.sqhk.co/jigekuragige/iam35gc/ea_sports_ufc_2_female_career_mode.pdfIn PDF document text
    • https://cdn.sqhk.co/fejukomus/NgiqAl7/kamabimanajepekukulosa.pdfIn PDF document text
    • http://jedilinosur.mywebcommunity.org/93614907584.pdfIn PDF document text
    • http://milanbeach.fun/79642160827ormiv.pdfIn PDF document text
    • http://gnoogle.site/american_gods_season_2_bookpyf4s.pdfIn PDF document text
    • http://zebisol.mypressonline.com/antonio_gramsci_cultural_hegemony.pdfIn PDF document text
    • https://cdn.sqhk.co/letijefa/oCSgcib/97090614747.pdfIn PDF document text
    • https://cdn.sqhk.co/kegufamop/54dSlD0/best_advertising_groups_on_facebook.pdfIn PDF document text
    • https://cdn.sqhk.co/winogolelog/geAOJhg/xujifetipeza.pdfIn PDF document text
    • http://reduslim-sito.site/16027860202v63ko.pdfIn PDF document text
    • http://marafonsport.site/song_of_solomon_chapter_11_shmoopqupie.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407069/normal_60446f2ed5628.pdfIn PDF document text
    • http://dezlice.ru/205900469275s2dz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454977/normal_60524deabe031.pdfIn PDF document text
    • https://cdn.sqhk.co/zalivelo/zgi5pNx/71144782421.pdfIn PDF document text
    • https://cdn.sqhk.co/jidevumedure/giaEIgh/ball_sort_puzzle_level_1075.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428045/normal_6045c1e6e94e3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/24156477603.pdfIn PDF document text
    • https://s3.amazonaws.com/gagotaniwipure/doors_to_darkness_trove.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/987738040.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/dapewufitotufi.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_off0000f6e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E7 5312 bytes
SHA-256: 87fcd0e15212aef7c633b0c5cf4a21d77d2ba456a43bdf6d901fe2e39d39cb2d
font_01_sfnt_off00010900.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10900 1888 bytes
SHA-256: 7ef6cb6698fea806eec66effba9ae77859a8e18c03169e66e212b1421c87ab72
font_02_sfnt_off00011213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11213 12968 bytes
SHA-256: fc95b46bb0e704d5db43798514050b8f64440d1fc9716b2c2dd7de93611b9788

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