Malicious PDF — malware analysis report

Static analysis result for SHA-256 9faec5cd723460e2…

MALICIOUS

PDF

81.1 KB Created: 2021-03-31 04:32:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 03bdd9d3d9a984bf0cdfbd904f14b615 SHA-1: 5df7699a5ca3fd056508b193f4a9fc5395d62678 SHA-256: 9faec5cd723460e29e004e34a15f6cf49b4e752027f1b7aee55354660177e8e6
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for link farms or phishing lures, with one prominent URL leading to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://pelibifir.ru/wix?keyword=insight+cable+channel+guide+wow PDF link annotation
    • https://cdn.sqhk.co/gegefemorosu/PihPQja/std_10_maths_textbook.pdfIn PDF document text
    • https://cdn.sqhk.co/benibavagoge/jbfiiii/jewels_temple_quest_match_3_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/dunafafaxen/EijSJRU/tubake.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://2eb5e741-fe40-4e13-9a70-20af0821b154.filesusr.com/ugd/6cf56c_a1b6566f5e72482083024900c1f54edc.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b65f357-a267-4617-9617-80844b4d5853/sony_dvp-sr510h_universal_remote_code.pdfIn PDF document text
    • https://d12d056d-c16f-42d2-bb36-b12dbd13f8e5.filesusr.com/ugd/a2005d_059d84e653954f819a89f99f0a12cd58.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e90ec83-766f-4813-9a85-ac2c9e13d5f8/wagasubepedalilosatawuve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5398a82-a5a3-4aab-b253-75b9bd0b45fa/how_to_eject_dvd_from_polaroid_tv_without_remote.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56ee3f65-23d6-4f1c-823c-d65c761a32ce/99_names_of_allah_download_atif_aslam.pdfIn PDF document text
    • https://16e729f2-8c5c-4787-b670-14aeba6c5e03.filesusr.com/ugd/ac55e2_1a8241d69cac404aae490b7962410fd7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a61b4da-4e84-44d5-87d5-5c3479b04a79/14550799963.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/952f785c-4dce-4a79-96cd-8e60cca6726c/67718157703.pdfIn PDF document text
    • https://19eae752-0dc2-40b2-988a-3ead9c543f91.filesusr.com/ugd/dee0a8_8a6a112be4c04d0caee7eca16d5be842.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/66fcb3a3-5e25-4597-8481-bc91a7f7abb0/how_to_replace_the_charging_port_on_a_galaxy_s8.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcfb9401-da06-47b1-8f53-50af6e72150b/texas_instruments_ti-84_plus_ce_graphing_calculator_black_walmart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7da839cd-8120-4ed7-8812-72274c01bed6/78274005310.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3b7fd57-68a8-4ff2-a817-170f2c496790/dujozuwivimebeteronewux.pdfIn PDF document text
    • https://22520ec4-2132-45a5-98b8-54db1b71d3ea.filesusr.com/ugd/b33b96_1c44607551b449ada7e73066211d116b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/abcfbd50-6395-4eb7-a149-257de60770c9/58248792386.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF152 5156 bytes
SHA-256: 8030b44dfecabf08493b3133dd3456099a830897a2b69e3390f534f8d3285ee4
font_01_sfnt_off000102da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102DA 11200 bytes
SHA-256: 8dda56e9c75835adb2b11f41b229e2bb3e1e4d6fc09ea829892d064ef026ee86
font_02_sfnt_off00012934.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12934 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3