Malicious PDF — malware analysis report

Static analysis result for SHA-256 63f378412776e2c6…

MALICIOUS

PDF

92.9 KB Created: 2021-02-17 03:11:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af735bf87f57d12927b3a222fbf8544f SHA-1: 2894fa123ee3c90ca447a9b42a757886b72f81f0 SHA-256: 63f378412776e2c6e4647e02b30aacb5a753ea7631bfb5c0e60ea491283bac0b
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ML classification and ClamAV, as malicious. It contains numerous external links, suggesting a link farm or phishing attempt. The embedded content, though heavily obfuscated, likely serves to redirect users to malicious websites, potentially for further payload delivery or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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://jacksth.ru/wix?keyword=kaai+yuki+songs
    • https://cdn.sqhk.co/zobunifi/gjI4jgn/the_office_pub_quiz_questions.pdf
    • https://direwuberegenis.weebly.com/uploads/1/3/4/3/134361890/dumav.pdf
    • https://static.s123-cdn-static.com/uploads/4411709/normal_60012f9c45264.pdf
    • https://static.s123-cdn-static.com/uploads/4369630/normal_6007e843de77e.pdf
    • https://cdn-cms.f-static.net/uploads/4379221/normal_602c59109f0ea.pdf
    • https://muwalivom.weebly.com/uploads/1/3/2/6/132695892/foxonifutitipu_bilovuzumatitu.pdf
    • https://wuwebiwurumebil.weebly.com/uploads/1/3/1/1/131164488/kujajikafufujabu.pdf
    • https://fobinoxibenor.weebly.com/uploads/1/3/1/4/131437242/8471062.pdf
    • https://cdn.sqhk.co/nowavutu/qjfjiDI/android_oyun_club_dragon_robot_2.pdf
    • https://cdn.sqhk.co/nedupugifuka/cjb9Afw/94127131705.pdf
    • https://cdn-cms.f-static.net/uploads/4491669/normal_5fd793a1584f7.pdf
    • https://negipefit.weebly.com/uploads/1/3/6/0/136054485/nefafe-wetamebuzipamu-zivaro.pdf
    • http://fesebenawasoz.iblogger.org/bidmas_differentiated_worksheet_tes.pdf
    • https://cdn-cms.f-static.net/uploads/4476766/normal_601d706e12b0c.pdf
    • https://jatevabuxises.weebly.com/uploads/1/3/5/3/135382810/jefevanokuv_kabelobezag_jijuvoludogi.pdf
    • https://tubolapibakosi.weebly.com/uploads/1/3/4/8/134872187/tusexomok.pdf
    • https://static.s123-cdn-static.com/uploads/4482406/normal_5fe1b5933ad4f.pdf
    • https://cdn.sqhk.co/tuwetebep/haqWhH1/2020_panini_prizm_baseball_trading_cards_mega_box.pdf
    • https://pulapiselipatux.weebly.com/uploads/1/3/1/3/131378970/0d1b1.pdf
    • https://cdn.sqhk.co/sosobita/rAnhaji/jemotelonukawiso.pdf
    • https://viwifigejemi.weebly.com/uploads/1/3/0/8/130814408/jinen-sewow.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sonowodiguvab.epizy.com/can_i_video_from_linkedin.pdf
    • http://revulagolorer.epizy.com/47405185800.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa18.bin
67ad85ae72243e2a45f97039ed0d0bfe3ed4737952623d523d96d5185bd74e21		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA18 9852 bytes
font_01_sfnt_off00011a8c.bin
fa55727424a58ae3acbaa019c225cb3ec44bfed8dce7a209e3b48bf95bb03808		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A8C 4860 bytes
font_02_sfnt_off00012b3c.bin
52355ce5dc0acbc780e03209ed1aee21c2893f7cb5c78417fd1ae2db10675401		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B3C 10868 bytes
font_03_sfnt_off0001509f.bin
39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1509F 16092 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.