Malicious PDF — malware analysis report

Static analysis result for SHA-256 37dc2001103ee6dc…

MALICIOUS

PDF

64.9 KB Created: 2021-02-25 16:42:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b6ab188ffdd1ae3b38bc17864e7f85db SHA-1: dc99f692965edded9b1aa144556c33589ee0ea15 SHA-256: 37dc2001103ee6dcb894843b83a45b586243d593d66fb61458f27cb2ffa0ed9d
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://baarspo.ru/wix?keyword=quadratic+test+answer+key', which is likely a phishing lure. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/wix?keyword=quadratic+test+answer+key PDF link annotation
    • http://vehicleusains.com/tetudezpbc0r.pdfIn PDF document text
    • http://zawugudumi.getenjoyment.net/butezasividujevixiz.pdfIn PDF document text
    • http://sfr-webmail.com/descriptive_writing_organizer6b6w5.pdfIn PDF document text
    • http://lamakexo.scienceontheweb.net/20089507583.pdfIn PDF document text
    • http://jikusofare.mywebcommunity.org/ranco_fridge_thermostat_adjustment.pdfIn PDF document text
    • http://nemosixumeki.mypressonline.com/8615268524.pdfIn PDF document text
    • http://jedomagisuw.getenjoyment.net/64605898956.pdfIn PDF document text
    • http://nabavawuzafurur.mygamesonline.org/fafabupagubunegaritodo.pdfIn PDF document text
    • http://uniques.space/thermo_king_apu_reset_button1vikd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pazovugal/peaky_blinders_season_2_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/nulabojenuzuzage.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/free_professional_powerpoint_templates_design.pdfIn PDF document text
    • https://s3.amazonaws.com/fevobelijogal/41340945304.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/scholl_compression_tights_size_guide.pdfIn PDF document text
    • http://pozidijapepore.atwebpages.com/is_1400_a_good_sat_score_for_ucla.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/labrinth_jealous_mp4_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/4368748880.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/jigalalave.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_off0000c24c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC24C 5220 bytes
SHA-256: 45b4a04afaa007b391984ae8c281cab0e08b3e58b796aaf6ef07b6515e80bc1f
font_01_sfnt_off0000d437.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD437 10136 bytes
SHA-256: 0fc3ea18256a11c2afaf24a05d2992a5aae873810c4ffcc57e51551a889aeaf8

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