Malicious PDF — malware analysis report

Static analysis result for SHA-256 716fa08738a28fc7…

MALICIOUS

PDF

77.3 KB Created: 2021-04-04 13:33:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d506c8a2ed17a5192547d2fc664eae98 SHA-1: 2f3683fdc1e34bb3955606fc219c1f525d24afb9 SHA-256: 716fa08738a28fc7e8340fe84463c7c790c48ecd4d8c29334e29e5f6fd817c13
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. One prominent link is to 'ponafet.ru', suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. No scripts were extracted, but the extensive link farm implies a coordinated effort to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ponafet.ru/strik?utm_term=seven+spiritual+laws+of+success
    • https://gakujoxabusu.weebly.com/uploads/1/3/5/3/135394689/lajipazunurunoveviv.pdf
    • http://fosavaxenu.mypressonline.com/bevomeze.pdf
    • https://jugujepatuw.weebly.com/uploads/1/3/4/9/134900825/jafobiwafebag_rikafonagema_kisaxekuta.pdf
    • http://vosajizegek.mypressonline.com/28895092214.pdf
    • https://tumokisomagen.weebly.com/uploads/1/3/4/8/134897409/pinafajun_mazire.pdf
    • https://jafipununevov.weebly.com/uploads/1/3/0/8/130814040/e1b38712e.pdf
    • http://lobabinuladeri.medianewsonline.com/xowogugubenoseta.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/94a0aaae-8b5d-4bc7-bb3f-b866208e308d/kopemuludukibanuwumejaxuk.pdf
    • https://uploads.strikinglycdn.com/files/f354c6c9-fcf8-49bd-86a4-d613ac69d9f1/dragon_bookends_amazon.pdf
    • https://uploads.strikinglycdn.com/files/cd60d3e1-35ce-4039-859d-e0683ab7a4b6/43496064685.pdf
    • http://mosemoxibug.rf.gd/73326926673.pdf
    • https://uploads.strikinglycdn.com/files/50b0bc75-ad05-481d-b2f2-2971ab434f10/43831891193.pdf
    • http://budezeja.rf.gd/childrens_songs_malayalam.pdf
    • https://uploads.strikinglycdn.com/files/01e17185-f231-4e3d-b681-8104b4cd1238/multiplication_times_table_worksheets_1-12.pdf
    • https://uploads.strikinglycdn.com/files/ce4ac24c-f0af-4df2-86ac-c07b04f7ff18/nebazubomeratepuwuforaweg.pdf
    • http://lugivodunoxasi.atwebpages.com/indefinite_articles_worksheets.pdf
    • http://gituloropo.rf.gd/wabogawazosakoxevaradulif.pdf
    • https://uploads.strikinglycdn.com/files/52dc2baf-e566-4e5f-b134-70d18596324a/i_am_that_book_in_telugu.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_off0000f0ca.bin
a548f005a842283b153900d68b780a3939c4b3607b2ec6a9741dec6a7d94854e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0CA 5264 bytes
font_01_sfnt_off000102d8.bin
37256519d4c0470d81c74dfdceeadee8b827747348ff7c391da881482a458afe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102D8 10812 bytes

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