Malicious PDF — malware analysis report

Static analysis result for SHA-256 9411e3bfa0e52496…

MALICIOUS

PDF

75.3 KB Created: 2021-03-08 14:03:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 8297e199cc3306ae74154467eb5134d1 SHA-1: 2a067b4cf7347f8b505147c2b5e8478a0809ec58 SHA-256: 9411e3bfa0e524967c548f9d7c226675ea9eadd2117f200b80c1abae72f331f3
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various websites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The embedded URLs suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://xezojetit.ru/award?keyword=bhagavad+gita+kannada+pdf PDF link annotation
    • https://vuxulirupam.weebly.com/uploads/1/3/5/3/135346280/13df620701247.pdfIn PDF document text
    • http://vovality.club/610840143817bhv9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369777/normal_5fdc882fef037.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409801/normal_602293d1c88b1.pdfIn PDF document text
    • http://healsmall.space/how_reliable_is_the_king_james_translation00x9s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426277/normal_603418165f1e4.pdfIn PDF document text
    • https://fubalaxusagipun.weebly.com/uploads/1/3/4/1/134108832/kabidipizelopudijumu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389107/normal_5ff4c57e0256d.pdfIn PDF document text
    • http://usersdeviceprotectionservice.site/tedupebowapesaxejelumuwub1ukyh.pdfIn PDF document text
    • https://xavitutasufeja.weebly.com/uploads/1/3/4/6/134669981/zumuxazox_vuzurapij.pdfIn PDF document text
    • https://fatitabo.weebly.com/uploads/1/3/4/7/134757356/5db2cc1da422e.pdfIn PDF document text
    • http://aycotoro6.xyz/94258493337hy62c.pdfIn PDF document text
    • http://allerop.xyz/6225172487961rs6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472506/normal_6007522a1f909.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387033/normal_600cdf018254f.pdfIn PDF document text
    • https://dumisoxi.weebly.com/uploads/1/3/4/6/134625223/1678938.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/fajixe/prevent_form_submission_onsubmit.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/what_accent_do_you_have_quiz_buzzfeed.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/sewulakeratovubijemobobu.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/does_pack_n_play_need_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/intel_bios_update.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/faded_alan_walker_piano_sheet_music_roblox.pdfIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/31850389326.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/xilipuliwikunezilejo.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_off0000eaa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA0 5172 bytes
SHA-256: b7990f34c9509d5d40a11a16e25eb3b09878beae935ca527d0465b1b47ce5a60
font_01_sfnt_off0000fc4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC4D 10424 bytes
SHA-256: fb7e05cacac064953d2c3cd08454e37811e9c42886e46f73cef76936ca4e1f4f

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