Malicious PDF — malware analysis report

Static analysis result for SHA-256 d32f840acaab5f0f…

MALICIOUS

PDF

79.2 KB Created: 2021-03-22 11:46:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 338bca80f305c3be819ee08d81084aaa SHA-1: 12dcb3a9dcf09e5adff8af0103253d308b69e824 SHA-256: d32f840acaab5f0fa308ccc3a341770439b3c4f6b7b94044bb25ad2e12214b5f
136 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, and heuristics indicate it contains an advance-fee scam lure. The embedded URL points to a suspicious domain, likely serving as a lure or a redirect to a malicious payload. Although no scripts were explicitly extracted, the PDF format can embed JavaScript for malicious purposes, and the presence of external URIs suggests an attempt to download or redirect the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://xezojetit.ru/aws?utm_term=starting+out+with+java+from+control+structures+through+objects+6th+edition
    • http://makamar.xyz/75362983349f2402.pdf
    • https://cdn-cms.f-static.net/uploads/4380211/normal_603bda5eb0133.pdf
    • https://cdn-cms.f-static.net/uploads/4464873/normal_601ca23751a40.pdf
    • https://cdn-cms.f-static.net/uploads/4368756/normal_60118bbbec981.pdf
    • https://cdn-cms.f-static.net/uploads/4426699/normal_6037f8f70ea34.pdf
    • http://beststudent.space/93549098007rwzdg.pdf
    • https://cdn-cms.f-static.net/uploads/4409627/normal_5fd3413e0c032.pdf
    • https://cdn-cms.f-static.net/uploads/4485309/normal_601b4b83899af.pdf
    • http://50offshop.info/70895584095gn504.pdf
    • http://3bureaureport.info/85456443528gj8eo.pdf
    • https://cdn-cms.f-static.net/uploads/4490752/normal_6013b13d1d2a3.pdf
    • https://static.s123-cdn-static.com/uploads/4491169/normal_5feb6f0b4c055.pdf
    • https://static.s123-cdn-static.com/uploads/4465269/normal_5fca07005f2ea.pdf
    • https://cdn-cms.f-static.net/uploads/4389358/normal_6024a3eee80e2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/sukobogixe/texevut.pdf
    • https://uploads.strikinglycdn.com/files/e3b615f0-e245-413a-8966-a6fd08aeee4b/xizarexodokarawena.pdf
    • https://uploads.strikinglycdn.com/files/7c670dca-4aaf-4bf1-a911-dc020a7afedc/16972360158.pdf
    • https://uploads.strikinglycdn.com/files/6f4c74da-91e1-475f-852a-6954d63389db/36854008704.pdf
    • https://s3.amazonaws.com/rizezobabub/79849801392.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_off0000f41c.bin
9ff2a3ed77f22523ee28b233fc8bcd3d7d0d145dbd0e965f89999a1b244fb3ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF41C 6060 bytes
font_01_sfnt_off000108ae.bin
6188412d752273d0f53e795fc5b0af56d9f43020612f9143ace4a37e5118db98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x108AE 11452 bytes

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