Malicious PDF — malware analysis report

Static analysis result for SHA-256 c71e3c855c311799…

MALICIOUS

PDF

81.8 KB Created: 2021-03-28 16:08:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 347b72c4e693986f26c92af0ea7dad56 SHA-1: d379054eff9246b84d915923bbd2183e89a72e67 SHA-256: c71e3c855c3117997d5bc592c45c7f1528711c14e6a02c34118a197becbcbfe3
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high probability of malicious intent. It contains an embedded URI pointing to a URL that mimics a search result for downloading popular media, likely a lure for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://kuzutuzo.ru/wix?keyword=my+hero+academia+season+1+download+reddit PDF link annotation
    • http://com-connexion.xyz/59518947691rmyxe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455684/normal_5fe78d474fff5.pdfIn PDF document text
    • http://7lessons.space/soccer_training_tips_for_5_year_oldsiex2o.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464327/normal_5ff7c93146fef.pdfIn PDF document text
    • http://tapagigozi.medianewsonline.com/tenodafepolivunopor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476416/normal_602782c79750d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383571/normal_60514eb1b2aa4.pdfIn PDF document text
    • http://fewudutizoxom.medianewsonline.com/76104804527.pdfIn PDF document text
    • http://xusibuvuzos.22web.org/27922857415.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476152/normal_5fe26b9f958a4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476142/normal_5fee9cd8aca55.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nosigegu.onlinewebshop.net/rofagam.pdfIn PDF document text
    • http://romolote.rf.gd/58086614294.pdfIn PDF document text
    • https://d99c26cc-8c68-456d-a039-1a26994c8d26.filesusr.com/ugd/105a8c_4f8011d1fa5f4ca5a43bdd85f3313d5e.pdf?index=trueIn PDF document text
    • http://mevedokepovi.epizy.com/zipuni.pdfIn PDF document text
    • https://ecad98c5-3f79-4b5a-9309-7060426a101e.filesusr.com/ugd/66ec94_a345085da50d48229b9ea49b64d9ee7a.pdf?index=trueIn PDF document text
    • http://degununizezubom.rf.gd/how_to_pair_lg_tone_bluetooth_headset_with_iphone.pdfIn PDF document text
    • http://webibufirug.rf.gd/mens_health_weight_bench_set.pdfIn PDF document text
    • https://168d2a81-f750-40c6-a653-3787650f980d.filesusr.com/ugd/3bcfef_8e37958ab17d4f61881753936716b2ce.pdf?index=trueIn PDF document text
    • https://cc652f91-b1ab-470c-b36f-46d838ef85b2.filesusr.com/ugd/fbccce_e14ae5707d9b4ef7870d3e7c1b278a90.pdf?index=trueIn 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_off0000eb2f.bin
767c6518a3846fb77489760451cfb0edee91794d22ca64a04c5b425e0b724717		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB2F 5428 bytes
font_01_sfnt_off0000fd9c.bin
79fca0ef1be36a4c53b0e33111739dea1a4b3cd0cfea52d8eae44d61c25a0ce7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD9C 11688 bytes
font_02_sfnt_off0001247b.bin
b91ebbfc40a94f10b2fcfc4d08542e4cd4fc38dcff43bcfefe5d572695fcce17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1247B 16160 bytes

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