Malicious PDF — malware analysis report

Static analysis result for SHA-256 9213cefc13ae92dc…

MALICIOUS

PDF

78.6 KB Created: 2021-03-15 13:54:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6885aa36e9d2418ea16b801d5a8b69ac SHA-1: e1f78c38e452c436b2cf3058af815cd9e896fe5b SHA-256: 9213cefc13ae92dc6a074f61fc19344f80c0392519524c233b55c66ff8224a67
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, and numerous other URLs are present within the document, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs indicate malicious intent to redirect the user to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://nipisod.ru/award?keyword=activity+on+node+diagram+example+pdf
    • https://cdn-cms.f-static.net/uploads/4499653/normal_601bd6a58e9f4.pdf
    • http://rineset.xyz/beneruzotoxnp7k7.pdf
    • http://sweetmeet.online/xexalovekokot4untw.pdf
    • http://pojibuvuj.mygamesonline.org/14407183657.pdf
    • https://cdn.sqhk.co/ranotigu/igQkidc/quarter_round_corner_tile_trim.pdf
    • https://fozabezadako.weebly.com/uploads/1/3/4/6/134639332/33e014.pdf
    • http://pinerapidsrr.com/netflix_altered_carbon_season_2_release_time3z2rx.pdf
    • https://cdn-cms.f-static.net/uploads/4473062/normal_6032c75153b98.pdf
    • https://gabanifuvumot.weebly.com/uploads/1/3/4/5/134588994/wewobo.pdf
    • https://cdn-cms.f-static.net/uploads/4497395/normal_603de83438b7b.pdf
    • https://nogovomavidel.weebly.com/uploads/1/3/1/6/131637041/5f95423a2508.pdf
    • https://cdn.sqhk.co/bewiviki/ijDnjjA/atmega16-_16pu_datasheet.pdf
    • https://cdn-cms.f-static.net/uploads/4385634/normal_604e978f4c7e6.pdf
    • https://lavovozanu.weebly.com/uploads/1/3/0/7/130739022/9323088.pdf
    • http://strapslap.online/what_is_raven_mean_in_spanish8qwg5.pdf
    • http://1pokypki.website/cordless_phone_dect_6.0_reviewswboax.pdf
    • https://cdn.sqhk.co/merabuvi/M3jejfK/wefizolivimaxeritoja.pdf
    • http://rubisteq.online/how_to_install_windows_10_from_usb_pen_drive_in_dell_laptopnhbjj.pdf
    • http://winclean-shop.space/how_to_make_parallette_barsrl63b.pdf
    • http://gusevoxuzuwelap.mywebcommunity.org/kenmore_front_loader_washer_error_code_f21.pdf
    • https://tixowofo.weebly.com/uploads/1/3/4/5/134592641/nigaraxa_jometuboku_zijakasi.pdf
    • https://static.s123-cdn-static.com/uploads/4414680/normal_5fc8558862384.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • 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_off0000e907.bin
5fee357d39d45b29b7acf61986cf2749438d3c798cdecafe965a937b325c002e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE907 5304 bytes
font_01_sfnt_off0000fb02.bin
fa00d765b871eb376d2b4981178c4d3adbb519b82d55d8bc8e88272028409a10		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB02 10380 bytes
font_02_sfnt_off00011e8f.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E8F 4324 bytes

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