Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ba64a77db7a1ce4…

MALICIOUS

PDF

87.0 KB Created: 2021-05-11 20:47:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e8d7c047b55308bd81d8bc4d1c978773 SHA-1: dfd148c1ef617c95216b5ff857b95ff8f6189803 SHA-256: 0ba64a77db7a1ce4836e68a23dc4852e8ed7b921f03d8728e3e3a0ca63e5595a
196 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are associated with SEO link farms, suggesting a phishing or scam attempt. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly indicates a fraudulent scheme involving prizes or parcels. While no scripts were explicitly extracted, the presence of embedded URLs and the overall structure point towards a malicious document designed to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://resalured.ru/wb?keyword=badger%205%20numbers%20for%20january%209th
    • http://lnstagramcopyrightservices.org/rimawiwidemamektub1n.pdf
    • https://cdn.sqhk.co/someteku/Fqgg6hd/business_management_degree_nyc.pdf
    • https://cdn.sqhk.co/rafatuvolix/hgggdl4/nilliyan_nashiliyaan_balori_song_mr_jatt.pdf
    • http://vashe-zdorovie.xyz/lagu_ayah_seventeen_lirikmyc0p.pdf
    • https://cdn.sqhk.co/famagafe/iifjhhb/download_home_design_expert_mod_apk.pdf
    • http://austritkfa.com/445392995885hda3.pdf
    • http://omerkatanalp.com/1919175728885v0o.pdf
    • https://cdn.sqhk.co/gidenateg/hwDz4hc/puxute.pdf
    • https://cdn.sqhk.co/nowonipewo/ii41nvG/lolanirabavupof.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://02bc4616-4eae-4b38-b2c9-0e654f754ee0.filesusr.com/ugd/069df5_9b08a4fd16da41a28b2d7ba1ff1667fc.pdf?index=true
    • https://68a74d12-89ac-4a94-b826-09ad332a30bf.filesusr.com/ugd/1a0392_7d9a7c3bdb6f4fbbb1535dae45344fdd.pdf?index=true
    • https://f3874c2d-c116-49c2-b7b6-9300dc8fc43e.filesusr.com/ugd/b11f6d_329d27628f304164be40ed00be08018b.pdf?index=true
    • https://7e079b21-6cfc-4bbc-a8af-001f4930a7f2.filesusr.com/ugd/f66805_4366e57e6f0045fbb83773f55089836a.pdf?index=true
    • https://86a9da1b-0b57-4b35-a77a-523886b904cd.filesusr.com/ugd/0d9a50_397e22b15b0f44af925ab27700a0b7e6.pdf?index=true
    • https://uploads.strikinglycdn.com/files/55a75f74-9f40-43b8-bbec-193236733751/hp_officejet_j4500_ink_cartridges.pdf
    • https://uploads.strikinglycdn.com/files/7b867851-6956-44dc-b690-cced53ac0499/risifararewoduxu.pdf
    • https://uploads.strikinglycdn.com/files/6d3f971e-b24e-4da9-a439-390fc55da8f9/can_i_go_to_any_dps_office_to_renew_my_license.pdf
    • https://78f5967e-1348-44d0-b43d-4fba71d4c3e7.filesusr.com/ugd/a94f6a_3ba45546019e420ca3e6d5f3ac4f39bb.pdf?index=true
    • https://d848e4b6-662b-4424-a759-963270729452.filesusr.com/ugd/30e015_0eaa0144296c4065b6295b540a6289eb.pdf?index=true
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fabc.bin
5c5338367692d85d0ea99707c8190b8d8e12331fbd470309586fb4a81d283bc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFABC 5936 bytes
font_01_sfnt_off00010ed6.bin
698fa423765250060db24193dce2c364429b2c6f64fba7739483ef9f1f89c2b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10ED6 11840 bytes
font_02_sfnt_off00013754.bin
732670151f2abc724907b5adbfb930603ee128ed07ac983e6264d23c5f4a308a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13754 16232 bytes

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