Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8229526745e0eb7…

MALICIOUS

PDF

79.6 KB Created: 2021-04-13 19:47:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 8f7e1d04b401c8dd1f9d0e6a70323814 SHA-1: 92e8f2aea62dab6d456d096f431512673e3b5e67 SHA-256: b8229526745e0eb787096efd58b60ade8919f5872dadb1d78bbad20edbb37173
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://nipisod.ru/strik?utm_term=how+to+draw+anime+eyes+crying PDF link annotation
    • http://wonder-ita.space/program_genie_h6000a_garage_door_openerxahmc.pdfIn PDF document text
    • http://mosomupusafebin.medianewsonline.com/dulatafopufefivosawedunu.pdfIn PDF document text
    • https://mibofadap.weebly.com/uploads/1/3/1/6/131637701/2d3aaa96e2f.pdfIn PDF document text
    • https://xunatopek.weebly.com/uploads/1/3/2/7/132710497/5481596.pdfIn PDF document text
    • http://gakukuketisalum.scienceontheweb.net/4883933723.pdfIn PDF document text
    • http://onlinetyz.xyz/30216132291n3mhd.pdfIn PDF document text
    • https://dodukitomot.weebly.com/uploads/1/3/1/4/131407143/5982500.pdfIn PDF document text
    • https://dorubirema.weebly.com/uploads/1/3/4/3/134317311/1c291ce34.pdfIn PDF document text
    • http://xepewifub.mygamesonline.org/wordly_wise_book_5.pdfIn PDF document text
    • http://uaregroup.com/353636125r88q0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a4cdf8e-0d44-450f-ad4f-d3e13299d660/lalanosibezupopofulevu.pdfIn PDF document text
    • https://s3.amazonaws.com/zulezov/larunuzi.pdfIn PDF document text
    • https://s3.amazonaws.com/rutufokedizon/jozuzipovubaxetepujujoja.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/getting_mean_with_mongo_express_angular_and_node.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbfdb472-9618-4013-9c33-fdbf468d34f3/25630249193.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/bazujavune.pdfIn PDF document text
    • https://s3.amazonaws.com/bivanud/terogufegamebito.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/doll_cute_images.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f527869-1abc-4ab2-8e77-02a2eb7d1a55/short_story_definition_and_characteristics.pdfIn PDF document text
    • https://s3.amazonaws.com/mekonulegipero/rufus_usb_bootable_windows_7_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/btw_indirapuram_full_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d386b777-9495-4b8e-8a75-73e8b877fbf7/79044581707.pdfIn PDF document text
    • http://tojuzogip.myartsonline.com/zifimi.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_off0000f84d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF84D 5380 bytes
SHA-256: acbcebab722b6752b4911d259b61e3331a92533d07a56c0571e62013b1060922
font_01_sfnt_off00010a99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A99 11432 bytes
SHA-256: c590f8e5776388d6b992b66d3c83e0a422b98de6c98f22807e003741f312b5e4

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