Malicious PDF — malware analysis report

Static analysis result for SHA-256 03709963073d9b1d…

MALICIOUS

PDF

62.3 KB Created: 2021-02-22 17:43:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 44ac10c7024e644439d784af2e0c6f78 SHA-1: 10788efeac2425667fdb168a0eea567394f8c496 SHA-256: 03709963073d9b1d64cd64db55e2474ee9a080e9247c01a486c538dc2e5c6965
96 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains an embedded URI pointing to 'https://maypoin.ru/wix?keyword=umn+libraries+databases', suggesting a phishing or credential harvesting attempt. The document body, though heavily obfuscated, appears to contain metadata related to the search query, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/wix?keyword=umn+libraries+databases PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4401976/normal_60067f62e6e29.pdfIn PDF document text
    • http://shlifovka-pol.website/ecological_systems_theory_classroom_activitiesapjef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374954/normal_60316901562c8.pdfIn PDF document text
    • http://redtea.space/tim_holtz_crazy_birds_mini0qowl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367308/normal_5ff666bacb43a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427795/normal_5fdbde32c619e.pdfIn PDF document text
    • http://petersikdar.com/retail_marketing_bookyz7cv.pdfIn PDF document text
    • https://tibilizam.weebly.com/uploads/1/3/0/7/130775373/382477.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485329/normal_60216b8b9dcd7.pdfIn PDF document text
    • http://sexesex.site/the_eric_andre_show_full_episodes_downloadwvtoi.pdfIn PDF document text
    • https://nuzopilubejam.weebly.com/uploads/1/3/4/4/134459065/womabefu-pofuroda-xixumewa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482854/normal_5ffa0bb698c83.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379222/normal_600392ea47bcc.pdfIn PDF document text
    • https://gorejirulikem.weebly.com/uploads/1/3/4/7/134738880/ziropewix-rilobati-tewugogafomawe-lurotejafa.pdfIn PDF document text
    • http://5coupon.info/58617075235nuvq6.pdfIn PDF document text
    • https://rijadotijijani.weebly.com/uploads/1/3/4/4/134470018/womulukapotukoxiguj.pdfIn PDF document text
    • https://sofifego.weebly.com/uploads/1/3/4/8/134899758/warokelirekevuk_favug.pdfIn PDF document text
    • https://cdn.sqhk.co/korulifesewa/JdhjUox/tubunolategatiwusakemife.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000bb32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB32 5100 bytes
SHA-256: 85d7aa69bbca462f01ba41dc13245a9d54428925d01c797c14be2e29757eb58e
font_01_sfnt_off0000cc67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC67 9328 bytes
SHA-256: 8c7d414f74857190648e352b5d31a181640418729592801a424b5a85f96ccd76

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