Malicious PDF — malware analysis report

Static analysis result for SHA-256 d67f174321706779…

MALICIOUS

PDF

77.1 KB Created: 2021-03-19 07:27:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8dfb7e1bbdf4992a688719c31693a818 SHA-1: 7cd5497ad669b972068784603f5752c46ad0dad1 SHA-256: d67f174321706779a88395ce92ad1a743f89c08ad91c765a89c26518d19a1eab
156 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as a phishing trojan and a machine learning model indicated a high probability of maliciousness. It contains numerous external links, including one pointing to 'mujopoweter.rf.gd/zuzilorederuwimo.pdf', which is likely a malicious payload or phishing page. The presence of embedded URLs and the overall structure suggest an attempt to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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=hayward+colorlogic+4.0+troubleshooting
    • http://fodosokidorakig.22web.org/macbeth_graphic_novel_original_text.pdf
    • http://pudevivufug.22web.org/23292846491.pdf
    • http://wexuxeretul.22web.org/belling_induction_hob_manual.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://mujopoweter.rf.gd/zuzilorederuwimo.pdf
    • https://uploads.strikinglycdn.com/files/d8bdf7ca-c7b4-453e-8abf-936df69805d7/what_is_the_smallest_town_in_canada.pdf
    • https://uploads.strikinglycdn.com/files/b524d0ef-b347-4ab6-b54b-95ed529a149f/difference_between_dna_and_rna_class_12.pdf
    • https://uploads.strikinglycdn.com/files/973932ec-4196-41db-8563-403b603ff515/25939834532.pdf
    • https://uploads.strikinglycdn.com/files/720a78f4-95f0-498e-bd2c-623f34a38670/being_in_love_osho_read_online.pdf
    • https://uploads.strikinglycdn.com/files/c69cadb6-843b-4b49-93d3-63bdcb422e6f/doug_kaufmann_phase_one_diet_recipes.pdf
    • https://33edd578-4186-4695-89f3-f56a5a23fc53.filesusr.com/ugd/f17c08_1b40a5d8045a4c7a883712eddab291e4.pdf?index=true
    • http://zasegusof.epizy.com/somewhere_over_the_rainbow_ukulele_chords_israel_kamakawiwo.pdf
    • https://uploads.strikinglycdn.com/files/a258bfe1-7a96-4a2e-b902-7513b2033bf7/graco_magnum_project_painter_plus_paint_sprayer_review.pdf
    • https://3c8197b3-f999-4f29-b3da-fbdfea3dbf34.filesusr.com/ugd/0047a4_0daaf2e2e164454e99ffbd95589b5a1e.pdf?index=true
    • https://uploads.strikinglycdn.com/files/3d94e5f8-abc9-4dbc-9198-7e012bb86450/whats_a_module_in_education.pdf
    • https://uploads.strikinglycdn.com/files/faacc24e-8afb-4c93-b5e1-a435cc284660/masterbuilt_electric_smoker_recipes_turkey.pdf
    • https://uploads.strikinglycdn.com/files/b81dca90-0a29-467d-a61b-3baca34a5289/ismart_engine_oil_capacity.pdf
    • https://2a082fd4-e93f-4b8e-9e59-408fa046b31c.filesusr.com/ugd/e334dd_7429d1aa88e1439090b2869c50cfecb6.pdf?index=true
    • https://uploads.strikinglycdn.com/files/b99cb76d-1edb-469c-82ec-6bb9975aa6d9/man_in_the_high_castle_season_5_episode_6.pdf
    • http://gerusugajuda.epizy.com/how_to_develop_a_90_degree_elbow.pdf
    • http://fugusun.epizy.com/watoladuxotaxafer.pdf
    • https://uploads.strikinglycdn.com/files/d780b534-8d08-41ae-80e1-b9839b5a3fbc/how_many_stock_symbols_are_there.pdf
    • https://uploads.strikinglycdn.com/files/c9670726-5cc6-416c-bb25-7aa47da75010/3939769949.pdf
    • http://jozusazagibazan.rf.gd/waffle_slab_advantages_and_disadvantages.pdf
    • https://uploads.strikinglycdn.com/files/def98755-35fb-4944-af2a-559ad742f37c/2019_toyota_camry_se_red_interior.pdf
    • https://uploads.strikinglycdn.com/files/a76ae091-a7db-46c9-98f7-1bc16c58b7c5/how_much_aid_does_china_give_to_other_countries.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_off0000ec81.bin
ca73b79db76c490d8add87f9f1db0758ea20648c8a9f25271e6b37f14c4d1ce6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC81 5760 bytes
font_01_sfnt_off00010030.bin
af5b66c602c72a205e54da17cce570362effcd8c1078a3053e14f073e10ebd72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10030 10840 bytes

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