Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0dff2f210184247…

MALICIOUS

PDF

75.8 KB Created: 2021-03-07 08:44:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 154c82a0a371e5e204bb0fc1ec097e44 SHA-1: 5764d2e0e8add46bede074d7ccbf7afdc76372ea SHA-256: d0dff2f21018424747ded74cdf373bdd38ab7d0a86c491258e869feed03ebcc7
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicated a high probability of maliciousness. An embedded URI points to 'resalured.ru', suggesting a phishing attempt or malware distribution. The document body, though heavily obfuscated, contains text related to restoring an iPod, which is likely a lure to entice users to click the malicious link.

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/strik?utm_term=how+to+restore+ipod+nano+4th+generation+without+itunes
    • http://vevaxogejaz.scienceontheweb.net/will_i_qualify_for_maternity_allowance.pdf
    • http://gekifek.scienceontheweb.net/fixidoda.pdf
    • https://mawetifatine.weebly.com/uploads/1/3/2/6/132683292/71eb3b060a.pdf
    • http://jarevine.mywebcommunity.org/toxofemeru.pdf
    • https://cdn.sqhk.co/vovusupa/vieijMd/latudegajixegixipixava.pdf
    • https://cdn.sqhk.co/vefusujix/yVWndia/67323915268.pdf
    • https://vedixoba.weebly.com/uploads/1/3/4/8/134864822/kakutazep-wixofalawal-sagawaxibuza-sobupipan.pdf
    • https://cdn.sqhk.co/netimupoxojo/iiijHgh/xuzerelofudobawonumoj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://979cd01f-16ea-4d2c-b189-234964c95597.filesusr.com/ugd/d4c4cf_ba4c5904cc354fa1b2e24f27a1d35627.pdf?index=true
    • https://121f8fc1-d270-4171-a721-8ccd656fc20f.filesusr.com/ugd/2ca22b_77f7b26ff3fe4a809569e17440638cbf.pdf?index=true
    • https://a7193630-a032-4ee2-b136-33837135b76a.filesusr.com/ugd/fac845_31d8aa88ca03480093c77ac477e48a68.pdf?index=true
    • https://899154e9-876a-4ab4-94d5-c8ef2aed10f2.filesusr.com/ugd/dcf9ad_c2d71adc46364f23869e3d03675a83d7.pdf?index=true
    • http://bibalaluroxute.epizy.com/aprende_ingles_facil_libro.pdf
    • http://kulixuvomewono.epizy.com/sawufeberupiloza.pdf
    • http://sisufovofow.atwebpages.com/basic_english_conversation_lessons_for_beginners.pdf
    • https://s3.amazonaws.com/liwafo/vabopavazevo.pdf
    • https://9387bd13-3746-4408-b474-2867f26e464d.filesusr.com/ugd/ace02d_43d006c5f46a44b199d9fb6567677d65.pdf?index=true
    • http://pibamifa.rf.gd/what_is_special_about_sookie_stackhouse.pdf
    • https://s3.amazonaws.com/mukut/durasuxiruzikewukejuwu.pdf
    • https://s3.amazonaws.com/bivanud/musabemirutitenokuko.pdf
    • https://s3.amazonaws.com/remuv/hyperx_alloy_fps_rgb_manual.pdf
    • https://s3.amazonaws.com/bajapovogam/99326486832.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb9c.bin
22c5c381b9f462e1c0649254ac1f2db1ed043f15034f83eaf93895085389be48		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB9C 5328 bytes
font_01_sfnt_off0000fdce.bin
20c86033cb0d70d4af7aaf5316424ae38470f7551b3f633e3608d47921ed20ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDCE 10396 bytes

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