Malicious PDF — malware analysis report

Static analysis result for SHA-256 140c4a58fa77735a…

MALICIOUS

PDF

79.6 KB Created: 2021-03-18 19:57:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 60730e74c47f757191c3d4154cc4df3e SHA-1: 135d3e9c16d17e1323b027d138eda100512d88cb SHA-256: 140c4a58fa77735a3887c8aff617afaeae1aaa701cee1745932ce9a796d50b27
156 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as 'Pdf.Phishing.Trojan' and ML classifiers indicated a high probability of maliciousness. The heuristic 'PDF_SEO_LINK_FARM' indicates the presence of a large number of external links, with 'https://xajibur.ru/wix?keyword=what%2527s+igh+mean+in+text' and 'http://jinitevuwug.iblogger.org/kazezepufo.pdf' being prominent examples. These elements suggest the document is designed to redirect users to potentially harmful sites, aligning with phishing or malicious content distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xajibur.ru/wix?keyword=what%2527s+igh+mean+in+text PDF link annotation
    • http://jinitevuwug.iblogger.org/kazezepufo.pdfIn PDF document text
    • http://vowujebotoza.mywebcommunity.org/24011938880.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378607/normal_5ff292837a45c.pdfIn PDF document text
    • http://zezasarasojid.mywebcommunity.org/garmin_forerunner_405_wrist_strap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417834/normal_6015d3db3a378.pdfIn PDF document text
    • http://jarewitof.mypressonline.com/artemis_fowl_time_paradox_audiobook_nathaniel_parker.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://9f9bd9fa-00fe-4673-b34e-9a629881f524.filesusr.com/ugd/09273f_d28cb324738648e6bd4053765d7227c3.pdf?index=trueIn PDF document text
    • https://6d23287f-a15b-43b7-8d69-700c0e01f504.filesusr.com/ugd/185c00_2d1de27589054692a07b4eb5c8963e04.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tarizirefevifab/ccna_2_chapter_7_exam_answers_2016.pdfIn PDF document text
    • http://gifesikubelazu.epizy.com/benevolent_fund_form_punjab_2018.pdfIn PDF document text
    • https://9e2bb560-353e-4f5d-a08b-1363560edab4.filesusr.com/ugd/6c032c_6bfd509b162d44a69b2ac60c7c4b4619.pdf?index=trueIn PDF document text
    • https://203aa715-7352-46b1-b16b-5d0aeeaa27a2.filesusr.com/ugd/0582e0_68c58df00ea14a698bc9a4a0c26b3114.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/supefujoxopubu/4346772870.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/common_themes_in_african_american_literature.pdfIn PDF document text
    • https://9607194d-0e7e-4366-bfe9-208bb3d0b89d.filesusr.com/ugd/c068f8_ed1dc3b494b34a4fa0b0f4b72e7568eb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/advance_directive_sample_form.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/one_clue_crossword_answers_chapter_44.pdfIn PDF document text
    • https://s3.amazonaws.com/vebenok/how_much_are_hearing_aids_at_costco.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/sigosojepo.pdfIn PDF document text
    • http://delixerilebuk.epizy.com/59214741371.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0DD 5084 bytes
SHA-256: 7f62fac4db7b0e020742926de213c63973fcda264bd68edbbd8a183d2df07a6e
font_01_sfnt_off0000f221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF221 12176 bytes
SHA-256: 006a956607606666053b389e80027f821fe2b431aa3a127e5ad5731183a17592
font_02_sfnt_off00011c14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C14 16164 bytes
SHA-256: f469c5aa689aa4c1965481b78cfaebbf1c3ebdad2306c7067134b7b4aaa0addd

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