Malicious PDF — malware analysis report

Static analysis result for SHA-256 e689fe0acc230d36…

MALICIOUS

PDF

49.0 KB Created: 2020-10-26 09:28:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a20022b5d7185d1057c9cb59f1e2f258 SHA-1: 73716a495994217a687aa76b744b8d6e89775aa0 SHA-256: e689fe0acc230d362b155ca15e9c83b04a1fefa4bb4db2d17bce6f8d3cd5ef12
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to free downloads and the malicious URL. This suggests a phishing or scam attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/strik?keyword=bhaktamar+stotra+in+hindi+mp3+free+download
    • https://zirufifun.weebly.com/uploads/1/3/0/8/130874679/rotimop-momekuxufibu.pdf
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/nonasizedugiture.pdf
    • https://pumowurunumig.weebly.com/uploads/1/3/2/7/132740285/6829012.pdf
    • https://jesasifewom.weebly.com/uploads/1/3/1/4/131453969/4dfb6f1d19f.pdf
    • https://varipejat.weebly.com/uploads/1/3/0/7/130739080/40ec05.pdf
    • http://www.jain24.com/wp-content/uploads/2015/02/4.bhaktamber-stotra-hindi.mp3
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c3a70cf8-ab25-4139-9541-8d8176faf1a8/vijowogegepajeke.pdf
    • https://uploads.strikinglycdn.com/files/f7e67584-a263-4a4f-a9cb-6bccea84be2d/kizomuxo.pdf
    • https://uploads.strikinglycdn.com/files/0f1fb9ad-71ad-4984-80e2-ea070e286476/christmas_quiz_music_questions_and_answers.pdf
    • https://uploads.strikinglycdn.com/files/29e70665-6177-4303-86b0-e291258b8d62/39255151389.pdf
    • https://uploads.strikinglycdn.com/files/007bc2e4-f5c0-4d1d-a904-88dbc5332592/golf_clash_wind_chart.pdf
    • https://s3.amazonaws.com/tetazino/medebuxovipu.pdf
    • https://s3.amazonaws.com/zetare/las_cavidades_del_cuerpo_humano.pdf
    • https://cdn.shopify.com/s/files/1/0479/0114/7302/files/fofobuleledidulisubi.pdf
    • https://cdn.shopify.com/s/files/1/0497/8494/6850/files/jamewag.pdf
    • https://cdn.shopify.com/s/files/1/0505/1659/0764/files/pazadoferatuwujoja.pdf
    • https://cdn.shopify.com/s/files/1/0503/6510/4285/files/84655648835.pdf
    • https://s3.amazonaws.com/sugaguxagu/brahmastra_book.pdf
    • https://s3.amazonaws.com/jamokaroxoj/41686560224.pdf
    • https://s3.amazonaws.com/henghuili-files/pdf_file_background_color_change_online_free.pdf
    • https://s3.amazonaws.com/gumegulaxi/html_codes_list.pdf
    • https://s3.amazonaws.com/damerirazib/23951912354.pdf
    • https://s3.amazonaws.com/midaguvimabof/92425157862.pdf
    • https://s3.amazonaws.com/muxozuvalubi/acid_base_properties_of_water.pdf
    • https://s3.amazonaws.com/zugutixe/97322005357.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://www.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073fe.bin
9da2fdd468e1703090b51406b1018585c2c041fe334122b32c888cd0beabb7da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73FE 5652 bytes
font_01_sfnt_off0000871d.bin
6ce3ed3d0cf168fbf74d6eb321148d5efc31cda11559831b77020f7d4c9f4c8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x871D 3740 bytes
font_02_sfnt_off00009298.bin
306c899c0b0e8f07094eae4f2fad69d6c4217fe149093dd286884a918b9dfb26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9298 10296 bytes

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