Malicious PDF — malware analysis report

Static analysis result for SHA-256 afaefcb10ebf4557…

MALICIOUS

PDF

95.3 KB Created: 2021-03-25 19:41:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f30001a120dfc13481788c34c6b2812f SHA-1: d71cdef367cce8344df484419d8ae1cabba90204 SHA-256: afaefcb10ebf45575177b8a43a653beb38f5ed0a3e41f8a12c71868138c2e52f
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jacksth.ru/123?utm_term=cesarea+definicion+pdf PDF link annotation
    • http://zhk-samolet-krasnodar.info/6801194344s1ip1.pdfIn PDF document text
    • http://mazafaka69pussy.online/320637318827rbv.pdfIn PDF document text
    • https://cdn.sqhk.co/zozijawutuxu/ggbIkMH/gogitej.pdfIn PDF document text
    • https://cdn.sqhk.co/gobuwovuv/Sjjhayw/71654578991.pdfIn PDF document text
    • http://roskycnmx.com/11121901101bz4jr.pdfIn PDF document text
    • http://dipitazifageb.iblogger.org/wosufapezekugikenotunag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nawosineromigi/kusedukidobupopobotov.pdfIn PDF document text
    • https://6fc76513-a17a-4053-940d-bef108f5ea85.filesusr.com/ugd/3a5ef0_91e0b33f728c44c7b49620ed6b7ca2fe.pdf?index=trueIn PDF document text
    • https://a4067306-84c0-45ce-9c36-3cbb795fcb37.filesusr.com/ugd/d5b970_63d2265127bc4ffd80977917f84d7501.pdf?index=trueIn PDF document text
    • http://tatefes.rf.gd/algorithm_coding.pdfIn PDF document text
    • http://situbepid.epizy.com/xejijojo.pdfIn PDF document text
    • https://189c2d36-84ff-4b81-9465-96c33c1d3b91.filesusr.com/ugd/35ddae_da3c2cf8787245c5acbb9dc6c949a722.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/auto_call_record_android_app_free.pdfIn PDF document text
    • https://03f57db0-fbcf-46ec-8713-21b5992b8512.filesusr.com/ugd/455f95_7c97e01914894c2890e559e4f7acc9c4.pdf?index=trueIn PDF document text
    • http://gelutusuxipedib.rf.gd/arch_linux_installation_guide_2019.pdfIn PDF document text
    • http://risumipekalur.rf.gd/jivawixetumidakijolawirer.pdfIn PDF document text
    • https://s3.amazonaws.com/bidemewufa/xagipepisejisabilefibil.pdfIn PDF document text
    • https://5b0e1d79-1acc-45ba-a965-31015372eee8.filesusr.com/ugd/67f5f7_04aebf6a97b7431cb8a08c625360e889.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bezorito/bob_evans_pancake_calories.pdfIn PDF document text
    • https://3568ea06-17fa-4787-91ae-86b9aa918cbd.filesusr.com/ugd/8ade13_c3ad347a741f4a2fa99ca69310a25069.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xixonu/flower_flyer_template_psd.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011d5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D5E 5024 bytes
SHA-256: 724d99acc7198238ac7e93f6d2dfac73528efbdc4613ed22afb5198c4b8bd308
font_01_sfnt_off00012e83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E83 14976 bytes
SHA-256: 802cb62e33f74bb4128d5dc53a8794ce379bd071e24c7598c050894be22a8b41
font_02_sfnt_off00015a7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15A7B 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd

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