Malicious PDF — malware analysis report

Static analysis result for SHA-256 e56f3fb6b60a0e95…

MALICIOUS

PDF

89.9 KB Created: 2021-04-03 08:52:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87e13d2acf5877edf6188823de5fcfe0 SHA-1: 67e98724fa4f26e095dafd94dc5c5e18b506145f SHA-256: e56f3fb6b60a0e95c7bd3da17813870f0ab7da3571e0f08983843b39aa830dba
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, pointing to various PDF files hosted on external domains. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and numerous external links suggest an attempt to redirect users to malicious content.

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/wix?keyword=blade+bound+mod+apk+offline
    • http://chestlune.online/nisumizaf9zxp.pdf
    • https://pexiseziburenof.weebly.com/uploads/1/3/4/6/134685472/ddf8a8c197.pdf
    • http://steblin.pro/what_is_the_moca_assessmentg3bk0.pdf
    • https://mosugomepa.weebly.com/uploads/1/3/4/0/134096926/nobakodujeri.pdf
    • http://idealslimitalia-official.site/husqvarna_128ld_factory_carburetor_adjustmentkzqiu.pdf
    • http://sitizinudex.getenjoyment.net/tojelekuboduraj.pdf
    • http://help-violation.com/how_to_take_apart_a_washing_machine_to_clean_it88jmq.pdf
    • https://vururera.weebly.com/uploads/1/3/4/4/134493513/9154932.pdf
    • https://zesasanigemi.weebly.com/uploads/1/3/4/6/134646319/togenesofawo_fejopekakobimem_dupesavigavadi_jobevut.pdf
    • http://d2-club.ru/what_is_a_commercial_contract_lawyeryuvgz.pdf
    • http://life-news.tech/does_taco_bell_have_keto_options1v1eh.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/e3fbcf8b-e858-4f75-a6e3-bf684967fcb7/26657958608.pdf
    • https://uploads.strikinglycdn.com/files/d8dff98e-3640-4b77-b0c0-047f9fbe08f0/how_to_set_timer_ge_oven.pdf
    • https://uploads.strikinglycdn.com/files/5e0a8a44-97aa-4e89-8a70-3fc7839b6934/ruwobepilixu.pdf
    • https://uploads.strikinglycdn.com/files/deda37e0-f799-4e76-953b-f8c5fb3620a3/how_to_unlock_full_version_of_minecraft_windows_10_edition_for_free.pdf
    • https://uploads.strikinglycdn.com/files/b225c544-5c7d-4a58-b774-3e77556f69a3/72655613129.pdf
    • https://uploads.strikinglycdn.com/files/b37f0d58-89fe-437b-bbbf-512f8a0edb38/melasubiwokabil.pdf
    • https://uploads.strikinglycdn.com/files/78c0ab6f-dfdd-47be-8432-f385e3e488eb/how_do_i_get_a_hawaii_tax_id_number.pdf
    • http://gaxilitexu.onlinewebshop.net/gizowewubowanamarivexu.pdf
    • https://uploads.strikinglycdn.com/files/a8485df7-017a-46e8-8dce-74f5d20a8417/79111830753.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e30e.bin
39233ee16e1974dd7ffe8b3b43c27e58496a614348bd301d834b4652ba746992		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE30E 4968 bytes
font_01_sfnt_off0000f3cf.bin
4a5048b4e3059c1eb39ce4a4d2467e4079b0fdba142014716079d60f3c2d1767		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3CF 4728 bytes
font_02_sfnt_off000105ef.bin
a1e69f3457aa3a590d9785177077c1d3096ad7bc76bbf377b166c76e2b0b3570		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105EF 21564 bytes
font_03_sfnt_off0001354d.bin
6713a5f835c2a2ef214bb5fd2afd5b1120411aa6fc3d071a993294f33b0741e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1354D 16388 bytes
font_04_sfnt_off00014b5f.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14B5F 4324 bytes

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