Malicious PDF — malware analysis report

Static analysis result for SHA-256 b46d51680ea8bc81…

MALICIOUS

PDF

73.1 KB Created: 2021-06-08 15:37:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5fa238e2bda2b127ed2b12db4d8d86b SHA-1: c13382861ee6afff63ad590917ae1427ad35863e SHA-256: b46d51680ea8bc815ef77eee50d82db7d294a7851e168df012e45b9663ccc1eb
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a website related to Zebra qln220 configuration, likely as a lure. ClamAV and an ML classifier flagged this PDF as malicious, indicating a phishing or trojan distribution attempt. No scripts were extracted, but the presence of an external URI and the high confidence scores suggest a malicious intent to redirect the user to a harmful site.

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://oniceh.ru/pbw?utm_term=zebra+qln220+configuration
    • https://static.s123-cdn-static.com/uploads/4449000/normal_5ffad7bb570f0.pdf
    • https://juzudibat.weebly.com/uploads/1/3/4/3/134328144/wunim-lewige.pdf
    • https://static.s123-cdn-static.com/uploads/4471464/normal_5fff6d84248b1.pdf
    • https://luselovuxetox.weebly.com/uploads/1/3/0/7/130739290/9008201.pdf
    • https://cdn-cms.f-static.net/uploads/4464735/normal_6037f5eb8ce6f.pdf
    • https://cdn-cms.f-static.net/uploads/4367617/normal_60521b1a15540.pdf
    • https://ranumurubakek.weebly.com/uploads/1/3/5/3/135341533/1287302.pdf
    • https://static.s123-cdn-static.com/uploads/4388158/normal_5fe2d8ee86e0b.pdf
    • https://static.s123-cdn-static.com/uploads/4502248/normal_60091da0bb51b.pdf
    • https://cdn-cms.f-static.net/uploads/4406170/normal_604f44ee7efbd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/da0ea6da-a239-4296-bad8-74d55a73ead3/8723432957.pdf
    • https://uploads.strikinglycdn.com/files/daf7793e-d90c-41b8-84b3-926920aa5bee/muzafupiwugajigosirolo.pdf
    • http://bawamotijeku.pbworks.com/f/automate_data_entry_in_a_web_form_using_excel_macros.pdf
    • http://noxiwako.pbworks.com/f/piwomokagefejejawap.pdf
    • https://uploads.strikinglycdn.com/files/6fefa321-d5fb-4dd2-a3ac-a2ad4a88e7d9/is_inbreeding_bad_for_dogs.pdf
    • https://uploads.strikinglycdn.com/files/e06eaa63-f6d9-4593-95dd-5c68837fe8b3/arctic_king_portable_air_conditioner_14000_btu_manual.pdf
    • https://uploads.strikinglycdn.com/files/76fe083b-8b76-44df-8550-f001a5fd6e26/fetivubofisupapega.pdf
    • http://ravowibosu.pbworks.com/w/file/fetch/144474480/sowuwopikumuliratuxebide.pdf
    • https://uploads.strikinglycdn.com/files/91221f9d-6694-429f-bd79-2baf32d18ebd/fevukabigetabonogin.pdf
    • https://uploads.strikinglycdn.com/files/495d4260-17a0-4b93-8ca5-575a49df89b3/how_to_fill_rent_receipt_form.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_off0000dff5.bin
52c43d8a8b67218d20e4b1a0ed88b9ec32c811e379f0407ea53652ce5519ed11		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDFF5 5368 bytes
font_01_sfnt_off0000f24f.bin
c2ea9a70f3c03dc66bad8d0d433c5bfdb10851a9f25d47f42dcfc4dee8d99d98		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF24F 10888 bytes

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