Malicious PDF — malware analysis report

Static analysis result for SHA-256 aff0a8ea03976844…

MALICIOUS

PDF

112.3 KB Created: 2021-02-19 00:52:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 0f62405e79f1481c6d680fb0d77ce1aa SHA-1: 7dc9b25c148a134e9e8d50950296532db6149c98 SHA-256: aff0a8ea03976844d8ff648f4786ad00224afd8eca4fbae2da8ee24bd67724f4
156 Risk Score

Malware Insights

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

This PDF document was flagged by a machine learning classifier and ClamAV as malicious. It contains heuristics indicating it's a phishing lure, specifically requesting recovery secrets or private keys from the user. An external URI was also found pointing to a URL that appears to be part of a phishing campaign, likely serving a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9911

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
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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=fleksy+%252B+gif+keyboard+apk+download PDF link annotation
    • http://lasleymarkt.ru/2687170900325vkm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410443/normal_5fd979a351bff.pdfIn PDF document text
    • http://obuv-kozha.ru/cinebench_r20_windows_76cteq.pdfIn PDF document text
    • http://espaceclient-cmb.com/xaperizituxobo4zdbj.pdfIn PDF document text
    • http://bigtittybella.com/dodge_ram_2500_oem_parts_diagramfqo3k.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467007/normal_5fd34364eeaf9.pdfIn PDF document text
    • http://form-lnstagramverifiedbadges.com/briggs_and_stratton_lawn_mower_625_series_manualzat8i.pdfIn PDF document text
    • http://lami-lashes.site/4238813081j5ma6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn PDF document text
    • http://smc.org.inhttp://smc.org.inIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tubukeganuji/escape_room_mystery_word_answers_level_41.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/75501389905.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/viewmodel_in_mvvm_android.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/ase_guidelines_native_valve_stenosis.pdfIn PDF document text
    • https://s3.amazonaws.com/xijilesuzuxo/invensense_mpu-_6000_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/bhagavad_gita_in_marathi_book.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/transformer_bumblebee_toy_car.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/25268190665.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/8465040167.pdfIn PDF document text
    • https://s3.amazonaws.com/pusixa/93147910664.pdfIn PDF document text
    • https://s3.amazonaws.com/mufukep/cars_movie_in_tamil_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/sefepugolupalax/21692524622.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • https://gitlab.com/smc/meera/blob/master/COPYINGIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 8

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD4B 6588 bytes
SHA-256: c6acebe3750ab55c09714fa1b34f6c70ddae3ce202e1a088ffcbc34adab53285
font_01_sfnt_off00010d94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D94 3880 bytes
SHA-256: c956c602f1c34b1d7a138bcb6752e8ba091674e579f38aa0975e32180d8ea748
font_02_sfnt_off00011b6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B6C 5268 bytes
SHA-256: a42693c3f666b0b1bb9b68e9f12c57a48d15fbe3a5cb39d5d78f277d7d7131ac
font_03_sfnt_off00012d62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D62 3456 bytes
SHA-256: 7bbb0ca5774171436ba08c6e80f72433a98bba25158556dabad4c31aabce11a3
font_04_sfnt_off00013ade.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13ADE 7508 bytes
SHA-256: f6b4fe6106dfbb12ba5ee1be04191d4dc2ac3dd6fd5918adb0f698a0b0a1078c
font_05_sfnt_off000154c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x154C9 12072 bytes
SHA-256: bf5ff0e5eecfab1e6cb3a27cdacd04f2cf75821ae9008e0dc083c6a2d43032c9
font_06_sfnt_off00017d51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17D51 21184 bytes
SHA-256: 466201a6249b6f8c9aea833353ca6fb22eef1b643e179f41a5c2d167997c1d5f
font_07_sfnt_off0001a30e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A30E 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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