Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b5e6c319fd6c6ff…

MALICIOUS

PDF

115.6 KB Created: 2021-04-01 22:27:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 73b48f69596bde622b701808c242d1aa SHA-1: c9fa10f3be5d6a68a791c0458f01625e746c70c0 SHA-256: 0b5e6c319fd6c6fff42f48f1decafcac53b0ae313dd8a63c698acf3af6d02bfa
166 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged by ML classifiers and ClamAV as malicious. It contains numerous external links, suggesting it functions as a link farm or phishing lure. A critical heuristic indicates the document instructs the user to copy and paste content into a command-line context, a common technique to bypass security controls and execute malicious commands. The embedded URLs likely lead to further stages of the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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://xajibur.ru/wix?keyword=u+boot+bootloader+manual PDF link annotation
    • http://sotarebesowula.medianewsonline.com/b_pharmacy_syllabus_2nd_year.pdfIn PDF document text
    • http://tixowik.22web.org/pdf_kotler_keller_marketing_management.pdfIn PDF document text
    • http://safodimim.iblogger.org/19325896603.pdfIn PDF document text
    • http://waralolojogeta.sportsontheweb.net/56334221334.pdfIn PDF document text
    • http://tolizidusinakil.22web.org/wifewadu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://guxajez.rf.gd/berkshire_hathaway_energy_annual_report.pdfIn PDF document text
    • http://wolevovugubim.epizy.com/methodist_almanac_2020.pdfIn PDF document text
    • http://gofudawaropuz.epizy.com/dungeon_fighter_online_shadow_dancer_guide.pdfIn PDF document text
    • http://weforonezanofo.epizy.com/what_give_one_word_answer.pdfIn PDF document text
    • https://29aa9d28-cc9d-45fc-8d86-3718b5881c84.filesusr.com/ugd/74c34a_9abb44ef5e1c4131a67b4e34230c0760.pdf?index=trueIn PDF document text
    • https://77047a80-9f17-4504-a563-a097c25ca12e.filesusr.com/ugd/5c8b2f_bac0d23950cc4670b3ce31fd9947833c.pdf?index=trueIn PDF document text
    • https://923a8ca3-316b-4844-b38f-9bc955ad4852.filesusr.com/ugd/312e0e_e841cf03b25d4be6b50021e95bae1220.pdf?index=trueIn PDF document text
    • https://8860adff-7f0b-4cf3-a358-cdd560dff136.filesusr.com/ugd/625844_4c311f02020f4cfb96bd67efb895c338.pdf?index=trueIn PDF document text
    • http://titizobilane.epizy.com/10270860489.pdfIn PDF document text
    • http://bepidinotovat.rf.gd/41644984004.pdfIn PDF document text
    • https://61069a5e-3c5f-4884-a3c7-8c7552058b74.filesusr.com/ugd/0789d5_67b410c555154f2c9f556ab6b98a8f33.pdf?index=trueIn PDF document text
    • http://rajakoxefulume.epizy.com/45770928921.pdfIn PDF document text
    • http://vepilezora.epizy.com/44941228514.pdfIn PDF document text
    • http://vugugemo.atwebpages.com/botefemara.pdfIn PDF document text
    • http://medazupu.onlinewebshop.net/biggest_companies_in_the_world_2020.pdfIn PDF document text
    • http://dusetelonuzaj.epizy.com/70591590707.pdfIn PDF document text
    • https://5366dd3f-28a3-4342-b8e5-5bed86455aec.filesusr.com/ugd/a92322_de0a91a08d7a49d5b1cde8dd6d788c7b.pdf?index=trueIn 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_off000186d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x186D8 4924 bytes
SHA-256: f3d0ec002ecebff597557582c91402e6928aaaee6df6e2cc2272528e769eb392
font_01_sfnt_off0001977f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1977F 11996 bytes
SHA-256: 4d51ba13b38946a691cbc35c1c734697be29d4b4a0044807053c014ace940ead

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