PDF malware analysis — malicious · 0199b72fa68d1d85

MALICIOUS

PDF

78.0 KB Created: 2021-03-17 09:48:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02

MD5: f501bd13474202fb0ba1feb59a880715 SHA-1: 880911130b9a01916c4396d65ca988b54965bb7c SHA-256: 0199b72fa68d1d857847bf504a172d0f463477dd6ff555f0b8163e2a4c11a13a

144 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The file was detected as malicious by a ML classifier and ClamAV, and exhibits social engineering tactics typical of ClickFix attacks. It contains an external URI pointing to a URL that appears to be a lure for converting PDFs, which likely leads to a malicious payload. The document body is heavily obfuscated, but the presence of the external URI and the heuristic firings strongly suggest an attempt to trick the user into downloading or interacting with further malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9957

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
ClickFix social engineering attack high SE_CLICKFIX

Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
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://kuzutuzo.ru/award?keyword=convert+pdf+to+word+full+document+online PDF link annotation
- http://devlp.club/85915865481dgeu5.pdfIn PDF document text
- http://businesshelpservice.com/jemupomawerewinutudazmxby.pdfIn PDF document text
- https://cdn.sqhk.co/dubutemaruxu/id1ihif/z_nation_characters_wiki.pdfIn PDF document text
- http://bomumerodozo.22web.org/roxixadufirimojezutefox.pdfIn PDF document text
- https://cdn.sqhk.co/kevovevude/UEDgghg/tezivajoxuxegi.pdfIn PDF document text
- http://salea.site/guitar_gospel_songs_with_chords_and_lyricsea286.pdfIn PDF document text
- https://cdn.sqhk.co/simikitivo/ggmiaRE/furry_maker_dressup_game.pdfIn PDF document text
- http://jagojurezowu.22web.org/beats_solo_3_wireless_bluetooth_android.pdfIn PDF document text
- http://lizoxot.iblogger.org/pazositenopexemefo.pdfIn PDF document text
- https://cdn.sqhk.co/fugovigul/haiiijR/mega_jump_in_doral.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/kawotexulozax/xedavixazu.pdfIn PDF document text
- https://s3.amazonaws.com/gifojuxaxeva/relaxing_piano_music_sheet.pdfIn PDF document text
- https://s3.amazonaws.com/bidurudilidujug/xawesogukijituwagarorede.pdfIn PDF document text
- http://nazonuretowu.epizy.com/16130442609.pdfIn PDF document text
- https://s3.amazonaws.com/fujadabez/la_iliada_homero.pdfIn PDF document text
- https://s3.amazonaws.com/jikopot/pirate_king_online_sharpshooter_guide.pdfIn PDF document text
- http://dibogazosenu.epizy.com/89535236325.pdfIn PDF document text
- https://s3.amazonaws.com/tumasun/imdb_book_thief_cast.pdfIn PDF document text
- https://s3.amazonaws.com/zozuxukoxo/19901608438.pdfIn PDF document text
- https://s3.amazonaws.com/xeponodij/civil_engineering_estimate_template.pdfIn PDF document text
- http://livagutavox.epizy.com/wefibe.pdfIn PDF document text
- https://s3.amazonaws.com/napejaxosinages/fitbit_charge_2_hr_watch_bands.pdfIn PDF document text
- http://gujomodezeroj.epizy.com/83250186449.pdfIn PDF document text
- http://tupanukaxigazit.epizy.com/81693823823.pdfIn PDF document text
- http://ladobuvop.epizy.com/one_of_us_is_lying_on_netflix.pdfIn PDF document text
- http://rewifavad.epizy.com/ingredients_in_taco_bell_creamy_jalapeno_sauce.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e845.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE845	4972 bytes
SHA-256: `0e53c1db3a3caa4ff9b724d1fb13863f048ca5b800be963b392daacb8df3805d`
`font_01_sfnt_off0000f934.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF934	10300 bytes
SHA-256: `142598daaff551de1f1e84ced3962439bc5542642ca463d538a1a8645ffc989f`
`font_02_sfnt_off00011c54.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11C54	4324 bytes
SHA-256: `a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f`

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