Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4d0b41fbd314084…

MALICIOUS

PDF

79.4 KB Created: 2021-06-02 22:59:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6be7ac5aaeacf7c9e24a710e1622c50a SHA-1: b42561513481929eb1999fd4ad7e88e30efecf72 SHA-256: e4d0b41fbd314084f345f062a00e9b7cf6228acb5770c03fd1a8234d76004dc1
96 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, indicating a high likelihood of malicious intent. It contains an external URI pointing to a URL that appears to be a lure for downloading a PDF, likely containing a phishing or malware payload. The presence of multiple embedded URLs further supports the phishing or malicious download attempt.

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://ketchas.ru/pbw?utm_term=convoluted+universe+book+1+pdf+download
    • https://gozanesudobewer.weebly.com/uploads/1/3/4/8/134852120/3794304.pdf
    • https://gazonuzurixe.weebly.com/uploads/1/3/4/4/134485976/gukameluzugod.pdf
    • https://bizupewikanawa.weebly.com/uploads/1/3/5/3/135321725/rofijulavufodarak.pdf
    • https://static.s123-cdn-static.com/uploads/4493891/normal_5ff52d6bbc2f9.pdf
    • https://gepolurur.weebly.com/uploads/1/3/4/6/134610134/tofojarad.pdf
    • https://wusulanapezuvu.weebly.com/uploads/1/3/4/3/134325740/zefewesazomeme-togaredenafuf-gafezowizora-livasesunadixe.pdf
    • https://powudeli.weebly.com/uploads/1/3/4/7/134772307/607902654429c9e.pdf
    • https://cdn-cms.f-static.net/uploads/4461791/normal_600f40e266591.pdf
    • https://rixemeja.weebly.com/uploads/1/3/4/7/134711448/4090572.pdf
    • https://cdn-cms.f-static.net/uploads/4489245/normal_606e552876157.pdf
    • https://static.s123-cdn-static.com/uploads/4428061/normal_5fe50e00dc7d4.pdf
    • https://cdn-cms.f-static.net/uploads/4446512/normal_604a2deb133c1.pdf
    • https://cdn-cms.f-static.net/uploads/4460447/normal_600ae426221c6.pdf
    • http://fontawesome.iohttp://fontawesome.io/license/
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/cabdc188-9f20-4491-89e8-d3f26e8e7e8b/tirasarulanilaxunijekeso.pdf
    • https://uploads.strikinglycdn.com/files/85473bcd-3f56-4800-8d63-e20cdb287643/zefarabiletakak.pdf
    • https://uploads.strikinglycdn.com/files/ae119544-c66a-4e93-b43a-d95b8f060207/how_to_drain_maytag_2000_series_washer.pdf
    • https://uploads.strikinglycdn.com/files/342adf36-b96d-41cc-aba8-482b263c4f5a/best_comps_afk_arena.pdf
    • http://nugurafuge.pbworks.com/w/file/fetch/144520371/lovug.pdf
    • http://negovijalulu.pbworks.com/w/file/fetch/144419070/77559390916.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000effd.bin
906312b206573a369fdf05f2d58baf7f592464f3d990fc278d772a9a6a9aa3be		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFFD 1528 bytes
font_01_sfnt_off0000f7c3.bin
e29f0db22542d2f6097f6237555f4fca610ac9c8dcdb7fba360da5fcd333bea5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C3 5348 bytes
font_02_sfnt_off00010a15.bin
5de94661a64b9c3a054335c2464a995d045978388a5501be298cc193858b55f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A15 11284 bytes

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