Malicious PDF — malware analysis report

Static analysis result for SHA-256 60b772d7a88497a0…

MALICIOUS

PDF

83.7 KB Created: 2021-03-14 00:33:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d8317d4b491bd7cddba85029c610bcb1 SHA-1: 8ce5f7ef0e124818be912d128a0dddf69375c4df SHA-256: 60b772d7a88497a00dac029deac8f5ade9f857bae0f9bc999bfb05b5b1ea95f7
156 Risk Score

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://crophysi.ru/123?utm_term=msc+inorganic+chemistry+notes+pdf PDF link annotation
    • http://wivuperafuzo.mypressonline.com/how_to_fix_gas_stove_not_lighting.pdfIn PDF document text
    • http://limuzinof.ru/best_basic_computer_science_booksonal8.pdfIn PDF document text
    • http://jigapenufi.medianewsonline.com/system_dynamics_palm_3rd_edition_solutions.pdfIn PDF document text
    • http://instapresent.site/bodyweight_workout_routine_for_mass48hm9.pdfIn PDF document text
    • http://saxefitipar.iblogger.org/soundtrack_disney_beauty_and_the_beast.pdfIn PDF document text
    • http://erogancolumbia.site/actividad_3_comprendiste_answerskva78.pdfIn PDF document text
    • http://tuworiki.22web.org/firefox_quantum_free_manager.pdfIn PDF document text
    • http://wordsidepost.top/lukeriloxogapomevetgd8s1.pdfIn PDF document text
    • http://tikopariwoxa.mygamesonline.org/vudidej.pdfIn PDF document text
    • http://kurs1.xyz/runirbo3pp.pdfIn PDF document text
    • http://xupokaxe.medianewsonline.com/qu_significa_soar_que_se_te_caen_los_dientes.pdfIn PDF document text
    • http://how2clever.com/magegelokazevalusigixidbn85i.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/najaxidutusolosutijofeke.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/60899883022.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/lujawusufagigonitev.pdfIn PDF document text
    • http://bixevefosado.epizy.com/how_to_stimulate_the_left_side_of_the_brain.pdfIn PDF document text
    • https://748f1d53-d141-46c1-926a-d14fc69713a3.filesusr.com/ugd/e3ed1f_df3c700c479143878d23ec9773b7836f.pdf?index=trueIn PDF document text
    • https://315736c7-1030-4200-8d24-05c9f4951019.filesusr.com/ugd/d19ca0_1967b88e5ada4854aa36092f7b24de1c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kewuxejikiwe/fnma_student_loan_guides.pdfIn PDF document text
    • https://s3.amazonaws.com/jivala/air_conditioning_maintenance_procedures.pdfIn PDF document text
    • http://livugaxoretedop.epizy.com/navigation_bar_html_css_template.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e641.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE641 5644 bytes
SHA-256: 3462dfedce8bd63e0ff732bb98d5aad83ce964d390561cd6a4dd0b9578f27866
font_01_sfnt_off0000f95b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF95B 2524 bytes
SHA-256: 55bcf5735285403ca2133390f840664d4b94e6d01ebe6d5b18da33b139cf42d3
font_02_sfnt_off000104a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104A3 11352 bytes
SHA-256: 1425a495d7f4516266e8979add4ec1f6a8a6763369158e4b76cb946b4ca70dc4
font_03_sfnt_off00012bae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BAE 16080 bytes
SHA-256: 3a0f8ed008c79ef5fc1e40fbe805bb4ed86c3b537cef76351acb51b29d81aea7

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