Malicious PDF — malware analysis report

Static analysis result for SHA-256 29820c616dabd6c9…

MALICIOUS

PDF

119.9 KB Created: 2021-06-29 03:16:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 11574b151eb6a36197330b9a737a7e88 SHA-1: 3cb749ed70475ea02a881db8f6eb93f58b1fe593 SHA-256: 29820c616dabd6c91840707c5b3d77db0b2900a34b9c26920a642d1be1ca890c
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs suggests a phishing or malware distribution attempt, likely leading to the download of a second-stage payload. No scripts were extracted, limiting the analysis of specific execution methods.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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 http://palenice.net/obrazky_clanky/file/81571071124.pdf
    • https://ngoctraithaibinhduong.com/uploads/news_file/37841188842.pdf
    • https://addsfly.com/userfiles/file/7550629649.pdf
    • http://womensmentalhealthmd.com/clients/9/9a/9a9ccad1be43d50cbc9928f06550b956/File/zovewuribavabisefene.pdf
    • https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/d821028b2359e24ce5793a146a1bc71b/26279498095.pdf
    • https://powermailer.in/userfiles/file/66531777050.pdf
    • http://tcihk.com/userfiles/55558553590.pdf
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609a00dab399d---13715565697.pdf
    • http://mispuntossaga.com/campannas/file/revaleto.pdf
    • http://amirafouad.com/uploaded_files/file/27701345312.pdf
    • http://hnc2.com/userfiles/file/83891349916.pdf
    • http://pokorny-podlahy.cz/UserFiles/File/51100433275.pdf
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/9b6955ce082f248f2beafcf15765f142/rogubipuxabevutinibot.pdf
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080e5cb7a3f3---jupezi.pdf
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9f72e4ee55---56009512207.pdf
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608336f391694---15657867642.pdf
    • http://www.tecnotrefg.it/wp-content/plugins/formcraft/file-upload/server/content/files/160982e63185c5---30815721816.pdf
    • http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9f99017584---38156837650.pdf
    • https://djennebeads.com/nbloom/fckuploads/file/20219712911.pdf
    • https://roweryelectra.eu/app/webroot/uploads/file/16220290285221.pdf
    • https://daleplumbinginc.com/wp-content/plugins/super-forms/uploads/php/files/a79d8ed09c6f30536c970de1c96c1f53/wefer.pdf
    • https://reflexlighting.com/wp-content/plugins/super-forms/uploads/php/files/f999b123050744055cc7d288f5b16a05/18166602867.pdf
    • http://bortran.com/upload/image/file/20210601024256.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=morphology+and+physiology
    • 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016e49.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16E49 16792 bytes
font_01_sfnt_off00018660.bin
0b06ef46fc4743b9980cc17d3e5a84c54af76624eaa4be5839aff0ca339418d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18660 10548 bytes
font_02_sfnt_off00019e19.bin
36f31bd815740e76954c8bb24e742d66612aca45f568531155df8b8d13a911fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19E19 20164 bytes

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