Malicious PDF — malware analysis report

Static analysis result for SHA-256 9297b1896de52aa5…

MALICIOUS

PDF

85.7 KB Created: 2021-02-18 12:11:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 372183c93120b1365ac3120e1b1c5f59 SHA-1: 847e8398ea76acc6dd47afffca9811c376f0f5b9 SHA-256: 9297b1896de52aa5a3186ec2b631ade03785b81d84404a11c6a063c039336083
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain and multiple other URLs that could serve as download locations for further payloads. The presence of a 'download button' heuristic further supports the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=military%20decision%20making%20process%20manual PDF link annotation
    • http://letidorega.22web.org/service_canada_ei_reporting._gc._ca.pdfIn PDF document text
    • http://fezibinuzot.iblogger.org/any_video_converter_full_version_kuyhaa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415739/normal_601bf8f59a9d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368222/normal_6023f96201c9c.pdfIn PDF document text
    • https://cdn.sqhk.co/balatexoriv/mYO0mhe/among_us_imposter_mod_menu_apk_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383470/normal_5fcd519369369.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479236/normal_5fe1abcbd8518.pdfIn PDF document text
    • http://electrumwallet.buzz/swahili_phonetics_and_phonology7cpzi.pdfIn PDF document text
    • http://faguduni.22web.org/concurrency_is_not_parallelism.pdfIn PDF document text
    • http://boxidodo.22web.org/73783696807.pdfIn PDF document text
    • https://cdn.sqhk.co/mezutowede/Ahggeic/kiwijujenutoba.pdfIn PDF document text
    • http://todolosepaxo.iblogger.org/me_adare_pujaniyai_shihan_lanthra_song.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/xukirizugukugi/borracha_natural_e_sinttica.pdfIn PDF document text
    • http://bodupizul.epizy.com/96808329076.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/98012311744.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/77803031943.pdfIn PDF document text
    • https://s3.amazonaws.com/tipikaxe/arturia_beatstep_pro_manual_deutsch.pdfIn PDF document text
    • https://s3.amazonaws.com/wiremeresegikon/51359409362.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_off00010212.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10212 5448 bytes
SHA-256: 60ba9d30e44a892ec78b2168bde04104b32f27c62c7338afd8fc7fd375b3b2e0
font_01_sfnt_off00011489.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11489 11292 bytes
SHA-256: 04bd96e0acb74465fb990bec2eb9c7d9f645ceb72c7d0b3d24908a6fb9d1afba
font_02_sfnt_off00013b51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B51 4324 bytes
SHA-256: ad623bc7c681097dfa1224999cf6cc6072d3ca9a137655dc1129b0261f0b357c

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