Malicious PDF — malware analysis report

Static analysis result for SHA-256 c56736171648b539…

MALICIOUS

PDF

72.8 KB Created: 2021-04-17 01:58:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 8da06066779fd5349db6ac3db2b84cc5 SHA-1: 907607e59ce215aa887c55c4fc149a5d831c2d64 SHA-256: c56736171648b539f399a9147a3d55c2b7c53c4567f94b7ee34f557618fd317d
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing attempt. The document contains embedded URLs, including one pointing to 'jumiwimov.ru', which is likely part of the phishing lure. The PDF structure also suggests it's a link farm designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jumiwimov.ru/strik?utm_term=how+much+money+to+open+a+rock+climbing+gym PDF link annotation
    • http://xofebuledat.scienceontheweb.net/treatment_of_uti_in_pregnancy.pdfIn PDF document text
    • https://cdn.sqhk.co/moromasi/hXU51hj/26951359221.pdfIn PDF document text
    • https://cdn.sqhk.co/zejejofe/geDhawm/xononavevabalax.pdfIn PDF document text
    • http://zomoxesami.22web.org/wesunemuwemagetin.pdfIn PDF document text
    • http://tepoparupomo.medianewsonline.com/environmental_biology_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/nazutupim/jjRG6gj/volid.pdfIn PDF document text
    • http://tanolugulutewu.medianewsonline.com/36718846553.pdfIn PDF document text
    • https://cdn.sqhk.co/xesagomi/a0vLTtH/mx_player_free_download_for_android.pdfIn PDF document text
    • http://tugokutuli.scienceontheweb.net/gaxazukezidigotena.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://64e1471b-64f8-4582-b127-b1692805dd1b.filesusr.com/ugd/507a3d_0584914fbb83479687c1e54451ebb3ff.pdf?index=trueIn PDF document text
    • http://bozusofofutuv.rf.gd/st_bede_s_college_shimla_prospectus.pdfIn PDF document text
    • https://5d55c623-01b0-417f-8131-8dfd0334080c.filesusr.com/ugd/9ef046_f73d37d705a448e8924f9f8246760e50.pdf?index=trueIn PDF document text
    • https://bf6af823-cb0d-4ee8-9d5b-4f0b1de5ed24.filesusr.com/ugd/9eb187_241bad592fb24eeb93c6980f2ae3fc46.pdf?index=trueIn PDF document text
    • https://b4e79a3f-0083-4b26-8056-4fe87fb46dfd.filesusr.com/ugd/332c1b_e07a53bde9ad4820ba5dc7ce0e19ba0a.pdf?index=trueIn PDF document text
    • http://kesurodijafezup.rf.gd/hp_p1102_toner_original.pdfIn PDF document text
    • http://romukebiguvux.rf.gd/definition_of_crime.pdfIn PDF document text
    • https://2ea9429b-0332-4ee6-bb75-ab9535b56c99.filesusr.com/ugd/e2f7e1_585857a125d64473af3c83dc01f695dc.pdf?index=trueIn PDF document text
    • https://9afb1793-bc57-4514-bb46-74e980466609.filesusr.com/ugd/11f207_d5ed2dd203b34e24a5599d8d29c12b13.pdf?index=trueIn PDF document text
    • https://ba10d46a-d7c1-43af-8542-f1a50f31aa8a.filesusr.com/ugd/4dded2_506ba222779648399a5607402679b0b5.pdf?index=trueIn PDF document text
    • http://vimitafukufes.rf.gd/57956629227.pdfIn PDF document text
    • http://bebovufuvuji.myartsonline.com/lifupiviwuwadijularobof.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_off0000dd3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD3D 5528 bytes
SHA-256: 3cde9dac01c44d11538675f79e5be344b43a96d0e72b9411eaeb8c71a55ad497
font_01_sfnt_off0000eff8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFF8 10472 bytes
SHA-256: db464dad4604411e19dc43bb1c175c70bc971580fc8d35d1ee5e87ddfea74a13

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