Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e5bbc2b06ef984e…

MALICIOUS

PDF

81.4 KB Created: 2020-11-08 14:21:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 14adb5e337648277290824035ee14131 SHA-1: 27e586434a0cd70b524f57986d567b16a3a37138 SHA-256: 5e5bbc2b06ef984e0a79617a1aea73f4ea4a2cf89b6117443acb9684beecd254
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is part of a link farm designed to attract search engine traffic. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

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://traffmen.ru/123?keyword=journey+across+time+chapter+12+pdf
    • https://bowiromifax.weebly.com/uploads/1/3/4/6/134613330/madodidiwalegapa.pdf
    • https://vajibenutiw.weebly.com/uploads/1/3/4/4/134487234/7462702.pdf
    • https://joxunirefebemi.weebly.com/uploads/1/3/4/3/134319414/zobudezomiwaw_xipasasedefu_bukamejipateva_namotosikekoziv.pdf
    • https://nixofukotozawe.weebly.com/uploads/1/3/4/3/134313466/858ce.pdf
    • https://mokapojigum.weebly.com/uploads/1/3/4/6/134690111/9819798.pdf
    • https://vaxajiwozoli.weebly.com/uploads/1/3/1/6/131637631/dcd4dee.pdf
    • https://tiposowa.weebly.com/uploads/1/3/1/1/131164246/6757834.pdf
    • https://bajumavo.weebly.com/uploads/1/3/4/4/134486103/zorapeg.pdf
    • https://turetufifej.weebly.com/uploads/1/3/4/5/134500159/6372013.pdf
    • https://revamimetanezoj.weebly.com/uploads/1/3/4/5/134597499/putusudazop.pdf
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/10610.pdf
    • https://mojipidu.weebly.com/uploads/1/3/4/3/134391160/1608344.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/bf194e21-f417-422e-ada8-3987387dd179/apc_battery_backup_xs_900_manual.pdf
    • https://s3.amazonaws.com/zurovajij/sosua_sex_guide.pdf
    • https://uploads.strikinglycdn.com/files/81ce1045-1c78-41fb-83d1-3998b3559410/bidemarabevutumulumu.pdf
    • https://s3.amazonaws.com/sefukirexuwekij/lg_49lf5400_specs.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00010b1f.bin
3a747a60de1cf348b646a08a65fb0fc7cbde7cc5e833710acab907682417181d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x10B1F 24424 bytes
font_00_sfnt_off0000d2e7.bin
7272d42d0bd8afd8bd6007d1f25a4073b689e89898fc9d4d43377a2a28f14ad6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2E7 5640 bytes
font_01_sfnt_off0000e5fc.bin
e6ce25c8618b770674ac70ee89aa3741ebd66a572a080f586671157266ae227e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE5FC 10824 bytes

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