Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0cb7ba8e1a49f90…

MALICIOUS

PDF

283.5 KB Created: 2021-03-19 08:45:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: ef5f413c9cf05b5fe6a7bf68804806b2 SHA-1: 99e1ebc4b12b36109cd81c83923d812d1c9f7084 SHA-256: f0cb7ba8e1a49f9001644e5b621d6d0c912ed346ef87bebe50bdfee5859f969b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result, likely intended to trick users into downloading further malicious content. ClamAV detection and ML classification strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were directly extracted, the presence of external URIs and the overall detection suggest a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9830

Heuristics 4

  • 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=the+enchanter+heir+pdf+free PDF link annotation
    • http://bonifacy.site/30738044763pelq8.pdfIn PDF document text
    • http://toppiksnack.xyz/civ_5_shoshone_guide1ados.pdfIn PDF document text
    • http://50offstore.info/2010_lexus_rx_350_nada_valueozj3r.pdfIn PDF document text
    • http://autokenn.com/waselumutipuwa0jzso.pdfIn PDF document text
    • http://sportplays.ru/motorola_talkabout_t465_two-way_radio_reviewbgnj2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/44228962682.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43c19f53-6a4e-42ae-9934-1908182b99c3/41647414394.pdfIn PDF document text
    • https://5862e4ea-63a6-4c92-af93-e06d02d1a664.filesusr.com/ugd/eaa371_a064aee6738d4f1b94ff319adfdcb1b6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wiremeresegikon/upsc_calendar_2018.pdfIn PDF document text
    • https://4a5660cc-52a2-48ff-9acb-4b4f1704cb6e.filesusr.com/ugd/81868d_4939b352f644480286374360da3995c9.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0058bb42-e69b-49c4-b267-fdf44f7182c2/roland_v_drums_td_11kv_review.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/henri_cartier-_bresson_the_decisive_moment.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c860a9e-023d-4cfb-836b-a59b1bbcc3b6/what_is_the_principal_point_of_aerial_photography.pdfIn PDF document text
    • https://2cc3dcad-61c1-4442-8662-ca5be7cd8672.filesusr.com/ugd/71b93f_76cba357c1974ceaa16402683b6f6f98.pdf?index=trueIn PDF document text
    • https://3e3188f7-d9e9-48da-9af6-4e6760718ee0.filesusr.com/ugd/4f7562_8e4a1fa1a055494d830f5beec4953cc0.pdf?index=trueIn PDF document text
    • https://7f793f8f-877f-420e-851b-8bae9ea62a4d.filesusr.com/ugd/78c764_b5e0a19db74e4938a63ff1dbc704de5b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nuselufuzo/gasefujoxetatadivixati.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/833ce1b7-abf8-43fb-8304-590969a25275/bikezuwitujepegi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aaa1bd71-f251-435a-bab1-3186b6e5ea5e/xivuxaruseg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e4b65ca-5e63-4f30-9807-bcb1e11b9ffd/champion_4000_watt_generator_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c019ec2-c49c-4980-a2b9-b95b10e5b73a/vemutirejukasesuzex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f58b258f-21e4-4faf-b35a-c318e9cd87fa/cannot_open_excel_file_from_teams_in_desktop_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a11a8aba-373d-415e-9d1c-f30c4bc99544/fagabewutuxujiropig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4be50d1a-01e9-41f3-902b-67e26c029055/linksys_ea6500_extender_setup.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/sivuva.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004272d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4272D 4980 bytes
SHA-256: b89102d1e0dc314330b5e8ad16d16943917d6a7469b5897d3a13ff56fb673a32
font_01_sfnt_off0004381b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4381B 11560 bytes
SHA-256: 31800f980f46a6b627861cc4ead3f53324fd0b452f4d864062ced2cd54d3675d

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