Malicious PDF — malware analysis report

Static analysis result for SHA-256 96e11b67fab29a97…

MALICIOUS

PDF

99.8 KB Created: 2021-01-12 15:44:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: f440bbfaf43f02233bd51be6a733d164 SHA-1: fffed91a2370645d3acf547321880ac6871bbdd4 SHA-256: 96e11b67fab29a976ec5ac272a506956a3c991dbc1e1ce9a2619798c617a4386
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is designed to lead users to potentially harmful websites. The embedded URL is disguised as a search result for 'online photo editor pixlr download', suggesting a phishing or malware distribution lure. The ML classifier and ClamAV detection strongly indicate malicious intent.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/wb?keyword=online%20photo%20editor%20pixlr%20download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4489257/normal_5fbb95f571319.pdfIn PDF document text
    • https://cdn.sqhk.co/difanemifal/hbiC1gg/infection_causes_mouth.pdfIn PDF document text
    • https://cdn.sqhk.co/mutobudenit/izGhjjd/slow_motion_video_editor_android_app_download.pdfIn PDF document text
    • https://fomodaduvi.weebly.com/uploads/1/3/4/7/134700625/dufijinowilete_xonuledoxosutod_fejiretisip_pijada.pdfIn PDF document text
    • https://cdn.sqhk.co/xawodoze/Jiahegh/12183874370.pdfIn PDF document text
    • https://cdn.sqhk.co/podidiwi/wiciexz/najonosorademivanopatewak.pdfIn PDF document text
    • https://noloxuxema.weebly.com/uploads/1/3/1/4/131453633/837da206801.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419629/normal_5fdb55ab64d7f.pdfIn PDF document text
    • https://cdn.sqhk.co/dudumadopole/ghhWz4H/smash_rushdown_characters.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375503/normal_5f8981b9c5293.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367903/normal_5f94cb0482c23.pdfIn PDF document text
    • https://cdn.sqhk.co/gobopovupav/jhbnjfy/75053160698.pdfIn PDF document text
    • https://cdn.sqhk.co/movijomo/fibSsEy/vubufimidaxokafep.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470828/normal_5ff0c6084741b.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/pathfinder_best_feats_for_eidolon.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00012ccc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x12CCC 16080 bytes
SHA-256: 521c950ba7a1b0dcbb36b06365d355cac9c1ec792f1c3e0fc3bc1b8566b5ee4b
font_00_sfnt_off00011b9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B9B 5056 bytes
SHA-256: 301de5de3628c73e127acc668a9e013618ae3a9b39ae012a3cd535b2d81e7c06
font_02_sfnt_off00015873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15873 12044 bytes
SHA-256: f752a1cc62d622142b5ca79ff2a15396fb03e1806ce6516e01a2f274f7fd93e1

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