Malicious PDF — malware analysis report

Static analysis result for SHA-256 8abcf2453d90b4ff…

MALICIOUS

PDF

106.7 KB Created: 2021-04-04 13:27:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53c30092ad9a0155bd9ac7b46ed305aa SHA-1: df44de041078f6d4d7cf9a8e5aed9897e044a5ff SHA-256: 8abcf2453d90b4ff3f5d34b42c79394f28240604533959573c8863d2bd4f079a
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains an embedded URI pointing to a URL that mimics a search result for a stroller manual, likely as a lure. ClamAV detection and ML classification strongly indicate malicious intent, specifically phishing. The primary IOC is the external URI used in the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/wix?keyword=peg+perego+si+stroller+manual
    • https://cdn-cms.f-static.net/uploads/4416935/normal_601d0010f0b7d.pdf
    • https://cdn.sqhk.co/jowapezo/hbhaifK/ice_cream_cone_mcdonalds_price_canada.pdf
    • https://cdn-cms.f-static.net/uploads/4485589/normal_603de03b74444.pdf
    • http://robinmani.site/suroneroxoku8s1yw.pdf
    • https://cdn-cms.f-static.net/uploads/4481673/normal_605d9551518bf.pdf
    • http://copyrightprivacy.site/depifulapejepotamomogewuxznlnf.pdf
    • https://cdn.sqhk.co/kajipazuto/jdajegi/58773771871.pdf
    • http://sallles.ru/problemas_resueltos_cadenas_de_markov2oeiw.pdf
    • http://carinsusa.com/wumiruvemokataselawnx25.pdf
    • https://cdn.sqhk.co/vorebilifi/fDjbXgg/money_tree_lucky_charm_bracelet_meaning.pdf
    • https://cdn.sqhk.co/lisesemafo/gVhjahS/10045901461.pdf
    • https://cdn.sqhk.co/xosuridasago/BVvjbig/lepadijetagaju.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://979cd01f-16ea-4d2c-b189-234964c95597.filesusr.com/ugd/d4c4cf_8ef1f6bb53d34a648d2fc46897a5f2f0.pdf?index=true
    • http://kovejenipo.epizy.com/gukoduvoviriwegekutodip.pdf
    • https://s3.amazonaws.com/salosibejodod/jevelekereraxev.pdf
    • https://c4a5d104-04f9-44e6-b03f-1f5edac3680f.filesusr.com/ugd/f23921_e910782e220c4fb4b0082d1a3930c346.pdf?index=true
    • http://zasefewesawutam.epizy.com/9835099940.pdf
    • https://1e8c0764-4a0f-46ab-84a2-5f63a8a44928.filesusr.com/ugd/6a0acf_c2dacf8807bd4ed58f75c56bf4147906.pdf?index=true
    • https://71f68c9c-1037-483c-a0ca-f268b7ddd3c8.filesusr.com/ugd/87fdc7_fd7089a2fff74fd2ac508c4e06ebd88a.pdf?index=true
    • https://s3.amazonaws.com/tobaziw/amba_bhavani_kannada_songs.pdf
    • https://s3.amazonaws.com/nilititonawafim/46864765224.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00016e02.bin
bf42a708de960f511b2810c81aa2a373998b73bec83bfad2964e87f884942576		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x16E02 26140 bytes
font_00_sfnt_off00011258.bin
fb9940f6975740ccdfa8d32f05bf6d719d6f2d9ee5b78fe5c0999b76207b795a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11258 5140 bytes
font_01_sfnt_off000123c0.bin
ce6e343c61077aefa44716df4d8981706c0f22463c1d8a9bc6daae85a15baf4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x123C0 29988 bytes

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