Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a410ec891ceed10…

MALICIOUS

PDF

92.0 KB Created: 2021-05-27 05:22:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 815e5cfe1f47fd3ed72887226211e2fa SHA-1: 29aa6ac2aa1a0bd307501c07bbafc5618fb93fbe SHA-256: 1a410ec891ceed10a088013971b96dc7005ef531499249e44c8ffb2179488401
156 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, characteristic of a link farm or phishing lure. The primary URL, 'https://zajinet.ru/strik?utm_term=what+do+georgia+guidestones+say', suggests a phishing attempt disguised as a search result. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://zajinet.ru/strik?utm_term=what+do+georgia+guidestones+say
    • https://static.s123-cdn-static.com/uploads/4409098/normal_5fdcf1743b745.pdf
    • https://lugarulanug.weebly.com/uploads/1/3/5/3/135383187/sikaze.pdf
    • https://direvegafazago.weebly.com/uploads/1/3/4/4/134491376/pibuxobewadekev_tajatenanewi.pdf
    • https://pufujodixig.weebly.com/uploads/1/3/1/4/131438007/topesodaxo_zolezidenulasew_pasalodekugusum.pdf
    • https://static.s123-cdn-static.com/uploads/4422371/normal_5fdf543c5a22d.pdf
    • https://bunogijadijis.weebly.com/uploads/1/3/4/8/134896562/8411946.pdf
    • https://cdn-cms.f-static.net/uploads/4470821/normal_6018374850ed5.pdf
    • https://static.s123-cdn-static.com/uploads/4455645/normal_5ff88954ce489.pdf
    • https://cdn-cms.f-static.net/uploads/4464070/normal_5fd1540f478b1.pdf
    • https://birafuwufejutik.weebly.com/uploads/1/3/4/5/134598964/4426276.pdf
    • https://static.s123-cdn-static.com/uploads/4484995/normal_5fc6b397ab6ca.pdf
    • https://lasapiboxemifol.weebly.com/uploads/1/3/4/8/134865682/9503709.pdf
    • https://jodulimije.weebly.com/uploads/1/3/4/7/134732884/sinosimubudir.pdf
    • https://cdn-cms.f-static.net/uploads/4371025/normal_60110d4d6cdf0.pdf
    • https://static.s123-cdn-static.com/uploads/4420244/normal_5fc9a207a3f5a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c68cf7d4-fe94-4b32-bca5-b118106eee91/93749909580.pdf
    • https://uploads.strikinglycdn.com/files/20cd8cd7-fe4f-45d2-9b20-95bc592222d7/what_do_my_oven_symbols_mean.pdf
    • https://uploads.strikinglycdn.com/files/7f6a1696-5ac4-4dc3-97d3-f460312dca6f/zufogevabono.pdf
    • https://uploads.strikinglycdn.com/files/8e7fd138-9b28-4f3c-862f-9c4c2fa8a4ac/is_a_backpack_a_personal_item_on_allegiant.pdf
    • https://uploads.strikinglycdn.com/files/02539ac4-a13f-41c4-88a4-8d33b29cdd8b/97295580060.pdf
    • https://uploads.strikinglycdn.com/files/e746d253-cd10-403c-99ef-fe74fdd31803/mupomepiwawude.pdf
    • https://uploads.strikinglycdn.com/files/5dd6fdf0-907c-4512-99f7-521f6305b655/zobuwiserawunolegowo.pdf
    • https://uploads.strikinglycdn.com/files/57b6675e-c56f-4b84-ab20-9551e4a553f0/diono_radian_3qxt_review.pdf
    • https://uploads.strikinglycdn.com/files/855064b4-a1e7-4d6a-b800-83592262c705/what_stroller_fits_safety_1st_onboard_35.pdf
    • 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_off00012688.bin
aff9e277acd28525eb8a7f0d20857225d67fdd29f330bf3d6a801491ab6cf54c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12688 5168 bytes
font_01_sfnt_off0001382d.bin
a13074908ba1a9fe752f004d32c07c8f357ec7748b822e3c13d48958a1a0deb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1382D 12080 bytes

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