Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5b9ad4c1ccb50f3…

MALICIOUS

PDF

70.9 KB Created: 2021-06-07 03:30:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7666fa513dfe795e23dd82242839caea SHA-1: 6552d1a215fc8c6f088d82f8d13f5d629fb825d7 SHA-256: e5b9ad4c1ccb50f355ad495816425f1a89dec0559fdbd45c203cf6dc04400129
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that leads to a suspicious domain, likely intended for phishing or malware distribution. No scripts were extracted, but the presence of the malicious URL strongly suggests an attempt to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://philabc.ru/pbw?utm_term=ben+franklin+office+episode+actor
    • https://cdn-cms.f-static.net/uploads/4422894/normal_5fd1c328c392f.pdf
    • https://cdn-cms.f-static.net/uploads/4463272/normal_6024994482d07.pdf
    • https://cdn-cms.f-static.net/uploads/4381766/normal_601f738dcff73.pdf
    • https://cdn-cms.f-static.net/uploads/4381321/normal_606e7d32ac1f2.pdf
    • https://cdn-cms.f-static.net/uploads/4366343/normal_600fb4611d2ec.pdf
    • https://cdn-cms.f-static.net/uploads/4503033/normal_603429b33a6bb.pdf
    • https://cdn-cms.f-static.net/uploads/4404296/normal_60204d7825eb8.pdf
    • https://static.s123-cdn-static-d.com/uploads/4417999/normal_60b77d92e5ead.pdf
    • https://static.s123-cdn-static.com/uploads/4481825/normal_6001563c41aae.pdf
    • https://cdn-cms.f-static.net/uploads/4453336/normal_606ac5352b69a.pdf
    • https://cdn-cms.f-static.net/uploads/4393208/normal_5fe60a98af2c7.pdf
    • https://cdn-cms.f-static.net/uploads/4378852/normal_6052e59e4743d.pdf
    • https://cdn-cms.f-static.net/uploads/4480748/normal_60bc219983423.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://raravisu.pbworks.com/w/file/fetch/144754242/yog_lore_era_of_chaos.pdf
    • http://fujiserefi.pbworks.com/w/file/fetch/144680064/susetekaluwavumovapuwe.pdf
    • https://uploads.strikinglycdn.com/files/199afa29-1a92-4d3a-a923-26b3b6dbcdfe/laxowabazedenifuzam.pdf
    • https://uploads.strikinglycdn.com/files/01e57e3a-0836-4059-aec1-d330a5af2b9f/2019_lexus_rx_350_for_sale_dallas_tx.pdf
    • https://uploads.strikinglycdn.com/files/a3277daf-36d2-43c6-9f07-b511a74d7b3b/40262704264.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_off0000d8d3.bin
f831e4ec10bfde79d95e6e2e8ff9ce3dce117b86e7e88e267a3c3156e3c05cd8
pdf-font-stream PDF embedded font (sfnt) at offset 0xD8D3 5260 bytes
font_01_sfnt_off0000eacc.bin
e13911f59a3cb936b910e90e58275bbe786cbf2ef4a2b9f32dc86761a3f83d59
pdf-font-stream PDF embedded font (sfnt) at offset 0xEACC 10548 bytes