Malicious PDF — malware analysis report

Static analysis result for SHA-256 35cc6c199b5760b7…

MALICIOUS

PDF

73.9 KB Created: 2021-03-15 17:44:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: df8938e178ee91d5b907c35e5043ab5b SHA-1: dbca9aa04eabecde8744c2f8b7cfb59b9710a9fd SHA-256: 35cc6c199b5760b73eed424ad6d28c0a73a4cde300a3f27599fc5d2a879d9241
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URL that mimics a search result for a repair manual, likely a lure to trick users into downloading further malicious content. No scripts were extracted, but the presence of external URIs suggests the document is designed to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://kuzutuzo.ru/wix?keyword=fisher+and+paykel+clothes+dryer+repair+manual
    • http://leomannapov.com/does_kaiser_make_house_callsplofa.pdf
    • https://cdn.sqhk.co/xalesikozip/DhetjhM/86056812194.pdf
    • https://cdn.sqhk.co/nugizape/mjcii74/wadewubilikipodawu.pdf
    • http://xizugef.medianewsonline.com/bejufenekalozot.pdf
    • http://xelasurugopu.mywebcommunity.org/46453261813.pdf
    • http://zusiwibewire.mypressonline.com/fubifu.pdf
    • https://cdn.sqhk.co/tutadazi/7jhfjee/27000411796.pdf
    • https://cdn.sqhk.co/xaxamipuxum/m2ji1ic/zamasabutof.pdf
    • http://lnstagramsecurity.net/higher_order_thinking_questions_for_guided_readingcdzx1.pdf
    • http://anstel.pro/download_file_opener_windows_7zaboc.pdf
    • https://cdn.sqhk.co/ranetixeba/bjhidia/long_coffin_nails_near_me.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/bd44c401-79c8-4cb7-acb6-610ca12defb0/lekizuzemodilexaxotixamap.pdf
    • https://s3.amazonaws.com/dufekifaral/all_souls_trilogy_book_4.pdf
    • https://s3.amazonaws.com/ganubatebedoxez/80957492685.pdf
    • https://s3.amazonaws.com/bidivo/sales_funnel_book.pdf
    • https://s3.amazonaws.com/jezaxojipevu/72336285965.pdf
    • https://uploads.strikinglycdn.com/files/4d23290c-4230-4da2-b3f7-b8ec5ed362f0/51145493216.pdf
    • https://s3.amazonaws.com/jajuzasalikirut/50151479834.pdf
    • https://s3.amazonaws.com/jamuluvuvava/80349725067.pdf
    • https://s3.amazonaws.com/zulezov/estructura_y_caracteristicas_de_un_texto_informativo.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.

FilenameKindSourceSize
font_00_sfnt_off0000e37e.bin
a82ec7b2c0b426afcb378b8787530488d8a3d0e41745d75a1fd4e2a1e9a012ca
pdf-font-stream PDF embedded font (sfnt) at offset 0xE37E 5432 bytes
font_01_sfnt_off0000f5e1.bin
0bbdc87b95715e8f94152a76850be84766f09754e54d8529d905e1a85b44dcb9
pdf-font-stream PDF embedded font (sfnt) at offset 0xF5E1 10596 bytes