Malicious PDF — malware analysis report

Static analysis result for SHA-256 74fe1248476a5a42…

MALICIOUS

PDF

79.4 KB Created: 2021-05-01 14:56:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 365d26a57ca9754b98974811fa2cf205 SHA-1: c1078640338c96a3129c36a1049a536de88555d0 SHA-256: 74fe1248476a5a42bd42a20e3a58f676f00d5c3ebe882f59d49822f5823939a6
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDF files, suggesting a link farm or SEO spam operation. The primary URL identified, 'https://golowaki.ru/strik?utm_term=what+are+the+5+economic+indicators', is likely intended to direct users to potentially malicious content or advertisements. The ClamAV detection and ML classifier also indicate malicious intent, specifically related to phishing.

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://golowaki.ru/strik?utm_term=what+are+the+5+economic+indicators
    • https://static.s123-cdn-static.com/uploads/4481990/normal_5fe0c011e71da.pdf
    • http://mojadejazisapa.sportsontheweb.net/51868283319.pdf
    • http://tepifugamokeg.medianewsonline.com/96292134910.pdf
    • http://tarigutese.mygamesonline.org/jexumuxazaxi.pdf
    • http://pugorot.mygamesonline.org/arquitectura_griega_antigua.pdf
    • https://static.s123-cdn-static.com/uploads/4465018/normal_5fee1b28d9c0f.pdf
    • http://rawitotizoxuk.scienceontheweb.net/a_mathematical_theory_of_communication_claude_shannon.pdf
    • https://cdn-cms.f-static.net/uploads/4493245/normal_604e479b2839b.pdf
    • https://cdn-cms.f-static.net/uploads/4501503/normal_6053080f58087.pdf
    • http://napodosawukezob.getenjoyment.net/early_renaissance_art.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tobito/vivawudifaxe.pdf
    • https://s3.amazonaws.com/wutogugej/fedivokudodaribilajozawu.pdf
    • https://4bf2f01b-ac99-4d11-b4a4-7adee35df590.filesusr.com/ugd/868b90_30371a7388fd4f27acfba78e8668dfd9.pdf?index=true
    • https://e57d8632-f742-4524-ada6-9cdf759d9f13.filesusr.com/ugd/b0cb2d_dd58ccb3807746d6a02e2a8de3829416.pdf?index=true
    • https://s3.amazonaws.com/retobifulipo/printable_map_skills_worksheets_for_4th_grade.pdf
    • https://s3.amazonaws.com/pobixedele/how_many_calories_are_in_a_take_5.pdf
    • https://s3.amazonaws.com/waduzirader/77888260221.pdf
    • https://s3.amazonaws.com/jazamerijekufol/lelawiwelar.pdf
    • https://s3.amazonaws.com/wukevirenesu/adobe_premiere_elements_pro_free_download.pdf
    • https://dc010c70-835d-4b56-8cb0-1e1bda7cab64.filesusr.com/ugd/fb576b_58e70e7b3f4e4e4c9fd0a1eca170d35a.pdf?index=true
    • http://rabelame.atwebpages.com/assertive_communication_style.pdf
    • http://vebusatoro.atwebpages.com/certificat_de_cession_de_vhicule_gratuit.pdf
    • https://4f0f5a39-0a2f-4cdf-b4e4-40a644fad8b9.filesusr.com/ugd/2024fe_1acf9899966f400dae8169fd4ee8c28a.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_off0000f7ee.bin
e53cd17b115a931bb6fd50257e3feab73a72f2f5c008a2276ca088dd1d25a1e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7EE 5284 bytes
font_01_sfnt_off000109cb.bin
09112343e542c6b251d5d28d42d94a7fbee81369b298d9d9c45cd950cca68e2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x109CB 11376 bytes

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