Malicious PDF — malware analysis report

Static analysis result for SHA-256 87c2972a30ae57e9…

MALICIOUS

PDF

80.2 KB Created: 2021-05-17 19:06:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 527e33851c554a4e8f7531774d8f0cf0 SHA-1: 64981d9f883e27ca4d9abf79b5fcdb5fd45dc110 SHA-256: 87c2972a30ae57e9453b08e41b939c3d23c544b36ec24c77ce32afb7a44f80b0
126 Risk Score

Malware Insights

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

This PDF document was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers, indicating malicious intent. The document body contains a search query for appliance parts, which is likely a lure to encourage users to click on the embedded external URI. This URI, along with numerous other embedded URLs, points to potentially malicious or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/strik?utm_term=where+can+i+buy+parts+for+my+lg+washing+machine PDF link annotation
    • https://cdn.sqhk.co/momujolo/rjblPic/best_voice_recorder_app_for_iphone_xr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418991/normal_6060cfa9e96cf.pdfIn PDF document text
    • https://cdn.sqhk.co/jutusaxibu/1ERRhil/bugogipizezal.pdfIn PDF document text
    • https://cdn.sqhk.co/rarirawibowo/iuGznhh/snake_plant_soil.pdfIn PDF document text
    • http://nunovoxiwanafuz.getenjoyment.net/free_willy_1993_whale_name.pdfIn PDF document text
    • http://kasaxeko.mypressonline.com/zojutojusajivogigudatoki.pdfIn PDF document text
    • https://cdn.sqhk.co/porosobof/iagdeNB/romantic_heart_stickers_2020_wastickerapps_lovelace.pdfIn PDF document text
    • https://cdn.sqhk.co/loxowopiv/ijaSigd/11676176501.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479212/normal_602c4cd5ad67d.pdfIn PDF document text
    • http://pevewoxoxup.scienceontheweb.net/samasokoxotemu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6af29464-018f-4f1f-b108-576d574ab305/buzitojuxanigixedug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ed02a2f-0b9d-445f-b545-914f67107207/what_are_the_advantages_of_writing_a_business_report.pdfIn PDF document text
    • http://zelojagedalelo.epizy.com/rafiloxikoboranib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a527247-1ce5-46ba-97c4-00b0991da78b/john_deere_lawn_tractor_sale.pdfIn PDF document text
    • http://lelekon.epizy.com/68833858744.pdfIn PDF document text
    • http://kamigawox.atwebpages.com/9939018585.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4bc0a90-d1eb-4295-8118-a0467be81a81/how_to_fix_magnetic_resistance_on_elliptical.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b741808-9984-46c1-b8e5-c4631e8bb1d1/1092280212.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/121eb905-3263-4f5a-8744-5cf5f4b8f0f0/nadoxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8728fe1-e0c4-43a8-af18-8a9709ee5430/black_and_decker_circular_saw_cordless.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_off0000f964.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF964 5776 bytes
SHA-256: ac252934146a406a51da3ef775f0b9c9baa040550800007db99f41777c1053cb
font_01_sfnt_off00010d09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D09 11324 bytes
SHA-256: e5197212469bccb2c150a7643f50bdabe109815cf56cee4dd6d56c2a71b06227

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