Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d15305a3e0aa18c…

MALICIOUS

PDF

98.8 KB Created: 2021-03-21 02:17:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f62ab2a0419bd9dd20ddd08a3d1d3167 SHA-1: e8c46af904ad6fa9c84c84843d9d3287d620fa02 SHA-256: 7d15305a3e0aa18c76c504d02095df95cb2ed07a7a36caf8296e11be858daca0
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to potentially malicious domains, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the presence of numerous external links suggests an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://soxebez.ru/wix?keyword=wave+on+a+string+worksheet+answer+key
    • http://morasuxod.getenjoyment.net/86904708646.pdf
    • https://nipalevix.weebly.com/uploads/1/3/4/0/134017489/7149803.pdf
    • http://xuvaxujogilo.mygamesonline.org/lyman_black_powder_handbook.pdf
    • https://vapaniwagivu.weebly.com/uploads/1/3/4/4/134442769/2316478.pdf
    • http://jelolizabuvixi.22web.org/felapekonoxegukokimonosen.pdf
    • http://wobafobigo.mywebcommunity.org/arihant_banking_awareness_books.pdf
    • http://berasowugixo.mywebcommunity.org/75232668653.pdf
    • https://babiweperes.weebly.com/uploads/1/3/5/3/135347107/9583966.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://wazewatiduxuz.epizy.com/xinubogiru.pdf
    • https://s3.amazonaws.com/vavale/50738126010.pdf
    • https://s3.amazonaws.com/jukoxisojow/18782230986.pdf
    • https://s3.amazonaws.com/wolina/a_queen_s_legacy_achieve_3000_answers.pdf
    • http://zepaxawom.rf.gd/arquetipos_hlio_couto.pdf
    • http://fobavoji.rf.gd/belomofek.pdf
    • http://jabejanaboz.atwebpages.com/21011431386.pdf
    • https://s3.amazonaws.com/tipikaxe/ccna_200-_125_vce_free_2018.pdf
    • http://gijaguvid.rf.gd/dungeon_fighter_online_leveling_guide_2018.pdf
    • https://s3.amazonaws.com/meludav/pisavasef.pdf
    • https://s3.amazonaws.com/dovulavavo/brother_1034d_serger_sewing_machine_reviews.pdf
    • https://s3.amazonaws.com/juzowilipi/albinismo_oculocutaneo_tipo_1.pdf
    • http://gujimosodaza.myartsonline.com/sotipojanelulum.pdf
    • https://s3.amazonaws.com/xajowu/tamil_actor_karthik_hit_songs_free.pdf
    • http://sogivuwe.onlinewebshop.net/zonopuxa.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010f95.bin
9a7cb4dee316d78209a2c21976c6322c3518482ea08029df49215a53cef39901		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F95 11600 bytes
font_01_sfnt_off0001354c.bin
5416b10ead5cedf44757a60b731d492bea8978d714938f06e21b20e27362f485		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1354C 5032 bytes
font_02_sfnt_off0001467c.bin
4a6050fbd43dfc8bff6b16eb0bf689d39a4dc771629fde49473217c189db0e49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1467C 12864 bytes
font_03_sfnt_off00016f26.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16F26 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.