Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eeaa2b17a0a8377…

MALICIOUS

PDF

254.2 KB Created: 2021-05-11 20:47:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ab2db94b9091106c174f54f62ee2700 SHA-1: 2bb190fbb79c2a02e34851f8ea729bf96a6254c4 SHA-256: 5eeaa2b17a0a83775363441f88066d634f7fcd68e8d79ffb7b20bc2d55cde38b
104 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'zajinet.ru', which is likely part of the phishing lure. The heuristic 'SE_URGENCY_LURE' suggests the document attempts to create a false sense of urgency to prompt user interaction.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://zajinet.ru/strik?utm_term=stack+on+gun+safe+battery+dead
    • https://cdn.sqhk.co/wofikubid/18qiRjj/44541927460.pdf
    • http://jawazapefaxuzit.mywebcommunity.org/brother_tn_630_drum_light.pdf
    • https://cdn.sqhk.co/bawijodol/kqMgHBf/resident_evil_4_mod_apk_android_lollipop.pdf
    • https://cdn.sqhk.co/dejuxafe/jjjidXU/41934797560.pdf
    • http://parkji5x.xyz/housefull_2_full_movie_free_downloadlbhfr.pdf
    • https://cdn.sqhk.co/tivinarafuvu/qTkiiWy/buy_vector_airsoft_gun.pdf
    • https://cdn.sqhk.co/gozigawefo/jxlgchf/pudding_pound_cake_recipes.pdf
    • https://cdn.sqhk.co/muwanije/ehiHjbe/82718447914.pdf
    • http://bexukavinawexov.mygamesonline.org/sybex_ccna_200_125_free_download.pdf
    • https://cdn.sqhk.co/tititafoza/p8habwv/arcade_bros_game_and_watch_value.pdf
    • http://wubujonil.getenjoyment.net/patriotism_vs_nationalism.pdf
    • http://claire-irk.ru/21093838075o1jjq.pdf
    • https://cdn.sqhk.co/lopumilekana/9hadTNB/vojibudumoxuveles.pdf
    • https://cdn.sqhk.co/gulanuwe/EKMhcu2/gumirufonafumazedezatofod.pdf
    • http://beautysss.site/how_to_trade_stock_options_for_beginners_youtubepadhj.pdf
    • http://summer-italy.fun/wiseretkx3jh.pdf
    • http://9gusevshop.space/learning_basic_arabic_languagepsxlu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://ca6b24e6-01cd-4368-a310-1df05077a315.filesusr.com/ugd/11b39a_b3a158da83f5436b843f7a46fcdfe7d9.pdf?index=true
    • http://pozidijapepore.atwebpages.com/10810317991.pdf
    • https://a35aa970-3e4e-4c20-be1f-53d10001bce9.filesusr.com/ugd/af4e73_2a03ee149b524db7ba4b9e804bf872c3.pdf?index=true
    • https://3745348a-78a0-42d7-8ff4-af2b45bf5faf.filesusr.com/ugd/02631b_c40e8ebab14345ee8d432fcb7da69d3a.pdf?index=true
    • https://0bdb67af-4c57-4a6e-9706-714cc80719f5.filesusr.com/ugd/fc840b_3e1d2e2d12124d45aa3058b4fe867279.pdf?index=true
    • https://a0bbd489-bf03-48a0-8e93-88abd0751e5b.filesusr.com/ugd/370ea2_aa4de92c30914d92992a6ec5e9667768.pdf?index=true
    • 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
    • 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_off00038d7a.bin
2ecbf3f452ee0cdfa0aa87220a0c17967c97a7d787ac7e72680df70c827c3df3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x38D7A 5568 bytes
font_01_sfnt_off0003a082.bin
6ebfa86514f77f47dd3f268b58ec921adc84758da42681771a2fdf6a3b2993b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3A082 17176 bytes
font_02_sfnt_off0003d507.bin
07fdc8a891c4b082ec42d64c21436b7eee7838106885b0126b5b461b21a42b5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3D507 16224 bytes

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