PDF malware analysis — malicious · de04900255a91d45

MALICIOUS

PDF

80.7 KB Created: 2021-02-14 11:46:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a8ff2570cd69b0440a1212f5588694df SHA-1: d015c16b7ed635a6ef57fd181038c97c30edd51d SHA-256: de04900255a91d457c8045fa22b9df5f5b6c34a91148d36837224a157dff617b

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document body, though partially corrupted, suggests a lure related to 'subject verb agreement lesson plan high school'. An external URI pointing to 'https://crophysi.ru/wix?keyword=subject+verb+agreement+lesson+plan+high+school' was extracted, strongly suggesting a phishing or malware delivery attempt. No scripts were extracted from this sample.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 4

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://crophysi.ru/wix?keyword=subject+verb+agreement+lesson+plan+high+school
- https://cdn.sqhk.co/bubiwalifeda/gekhjAg/jekuboxulekate.pdf
- https://cdn.sqhk.co/jigugabopu/jggjgia/tachyon_rods_uk.pdf
- http://alcexpress3.xyz/arduino_uno_indonesiafbn7t.pdf
- https://cdn.sqhk.co/xedufoga/jhgdgiQ/necromancer_names_funny.pdf
- https://cdn.sqhk.co/japedovak/DjciavY/mopaseku.pdf
- https://cdn.sqhk.co/tefupudoma/gfbZigm/bhakti_ringtone_2020_ke.pdf
- https://cdn.sqhk.co/linotepibubi/hbr3Hin/kikikalogusir.pdf
- https://cdn.sqhk.co/tumowara/ijDRhhP/2225272898.pdf
- http://shoop-fo.ru/time_flow_time_and_money_simulatore1iqp.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://lamuverifob.epizy.com/97626103887.pdf
- https://s3.amazonaws.com/tumuzu/deped_medical_certificate_form_for_teachers.pdf
- http://namavorudil.epizy.com/kshatriya_full_movie_free.pdf
- http://xovimed.rf.gd/descendants_3_full_movie_mp4.pdf
- https://s3.amazonaws.com/rirusozo/bike_race_3d_game_mod_apk.pdf
- https://s3.amazonaws.com/rolefosiju/voter_list_rajasthan_2019.pdf
- https://s3.amazonaws.com/bajapovogam/the_ordinary_retinol_guide.pdf
- https://s3.amazonaws.com/babetafaperaxov/eos_rebel_t5_1200d_manual.pdf
- https://s3.amazonaws.com/woberiz/follow_instructions_worksheets_free.pdf
- http://sevuvev.epizy.com/absolver_steam_guide.pdf
- 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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000fb87.bin` `26324522d19e376ba3ca7cfb713ada97e25fe1200f31f4922a8e1384f1903fbc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFB87	5728 bytes
`font_01_sfnt_off00010ee9.bin` `f3d41e58749a7329df0deb7582da3bab09c792035c804720e07b20506e819040`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10EE9	11568 bytes

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