Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbb89c61620e110c…

MALICIOUS

PDF

79.1 KB Created: 2021-03-07 08:47:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 1606dd7f162f035cb495eb0ce66f9d13 SHA-1: 59bdcf1b4848d2ebe7d9e3bb621b26e632a2a442 SHA-256: fbb89c61620e110c25ec26e54cec3ca0f11472806d0ed2713a1d6ae533351682
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://lozipotod.ru/123?utm_term=mujer+que+sabe+latin+resumen', which is likely used for phishing or to download a secondary payload. The document body, though heavily obfuscated, suggests a lure related to a book summary.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://lozipotod.ru/123?utm_term=mujer+que+sabe+latin+resumen PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4446280/normal_5fe3a6b98ea1f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373788/normal_5fc5d885af850.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413373/normal_603c55353a6a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459466/normal_60351490938b2.pdfIn PDF document text
    • https://jurogewogil.weebly.com/uploads/1/3/4/3/134318518/riwuba.pdfIn PDF document text
    • http://golixudib.mypressonline.com/bitnami_wordpress_download_mac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416143/normal_5fc6f14354d78.pdfIn PDF document text
    • https://tekudijasefemo.weebly.com/uploads/1/3/2/7/132740256/bf70ef02.pdfIn PDF document text
    • https://cdn.sqhk.co/wikaraxixi/Sjbjcn9/kidesogewimumupamafabuna.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvexajamu/gtjduin/gixulemiserinafovoretupo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426556/normal_5fd2253f3a2ba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465545/normal_5fe1963ce423c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489057/normal_601cf9e8d3a66.pdfIn PDF document text
    • https://cdn.sqhk.co/lepavenujal/fFpsLaJ/picture_framers_hope_island.pdfIn PDF document text
    • https://kurupatasewa.weebly.com/uploads/1/3/5/9/135958836/a1e609.pdfIn PDF document text
    • http://nomudepalak.medianewsonline.com/weraxotekilobegapipuzof.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jolozidabi/libro_konmari_la_magia_del_orden.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/bazixoloxiriwi.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/how_to_break_a_curse_biblical.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C0 4952 bytes
SHA-256: 134df5ed08eb2c4a9a71f007718b9291ab14023742bfdbf92fae396eccf89f33
font_01_sfnt_off0000f980.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF980 11684 bytes
SHA-256: 6f655c4697fa26cefeed7cbb4d13bd16a6cd3acf15fce5d0280f1da7bd349173
font_02_sfnt_off00011f73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F73 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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