Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f26a093bd738d07…

MALICIOUS

PDF

92.0 KB Created: 2021-03-30 00:25:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1786e7e5f47e1b33a85011c168db434 SHA-1: ea9d7ab7955933a01c825057eabbcda763da4a38 SHA-256: 1f26a093bd738d0751a3080ef82b952eace62dcc430e49a1fa955a033c3953e5
96 Risk Score

Malware Insights

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

The PDF contains an external URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. Although no scripts were explicitly extracted, the presence of an external URI suggests an attempt to redirect the user to a malicious resource, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://pelibifir.ru/award?keyword=corporate+brochure+pdf+template
    • https://cdn.sqhk.co/dumudegurit/Ijfiari/mercantilism_synonym_definition.pdf
    • http://getizibibi.22web.org/gurosizamezilexofunabaz.pdf
    • https://cdn.sqhk.co/birenejar/jiChfig/samsung_s7_default_ringtone_download.pdf
    • http://gelupulofevabek.medianewsonline.com/strength_of_materials_by_ss_bhavikatti.pdf
    • https://cdn.sqhk.co/gulaxemetila/jdfBihT/to_do_list_software_free_download_windows_10.pdf
    • http://wunowixumofe.22web.org/brake_buddy_39495_classic_ii_rv_braking_system.pdf
    • http://kifowiwesujuwil.iblogger.org/the_fisherman_and_his_wife.pdf
    • https://cdn.sqhk.co/punipopi/gjy7Xji/hello_dolly_louis_armstrong_instruments.pdf
    • https://cdn.sqhk.co/sofilita/jd35ifs/58643681956.pdf
    • http://nudikegavugo.22web.org/pafutunanufume.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/gedesisumi/42495810776.pdf
    • https://b54663a3-ff9d-4122-b75c-69b71428c9b0.filesusr.com/ugd/cfa91a_7fcbc65db50843d3a104acce2a20784c.pdf?index=true
    • http://poxelisenaxoxig.epizy.com/base_de_datos_algebra_relacional.pdf
    • http://sitotozip.rf.gd/marriott_s_practical_electrocardiography.pdf
    • https://s3.amazonaws.com/nefomojuwet/garevedosefabun.pdf
    • http://koriwironawuva.myartsonline.com/dexokamomejegulema.pdf
    • http://tesoxukezeziles.epizy.com/47297242769.pdf
    • http://boxugajot.rf.gd/saluvelopunaguwasabunu.pdf
    • http://sojugixu.epizy.com/94740700638.pdf
    • https://s3.amazonaws.com/vebisop/dodolog.pdf
    • http://lejiletuvasipib.onlinewebshop.net/how_many_movies_are_in_the_insurgent_series.pdf
    • https://e25b5f36-ee09-4010-8803-019b2853a23b.filesusr.com/ugd/c34eac_da2290f7e371464aac123b7f28e7be76.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011e0b.bin
9f6c685abc0efd2511ccdd30be251ae1871634de92bff100fec62be170ad53ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E0B 5108 bytes
font_01_sfnt_off00012f69.bin
4438677d824c8c374f5e7367fbd33b86d6d3bc3548285d3ecb312f219a647bc8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F69 10844 bytes
font_02_sfnt_off00015461.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15461 4324 bytes

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