Malicious PDF — malware analysis report

Static analysis result for SHA-256 b80db5ff3efa9865…

MALICIOUS

PDF

92.1 KB Created: 2021-01-10 10:40:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 35e10896a6cc4300961e41568f8a622f SHA-1: 86c7b6e14fe731c4e3e9b95fcba725858ccfbb5b SHA-256: b80db5ff3efa98651318c11758448f0f9583611efe76e2282024094d98149868
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, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded URL suggest it's designed to redirect users to malicious content, likely for phishing or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://cctraff.ru/aws?utm_term=rig+veda+upakarma+procedure+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4404965/normal_5f9a3a2605cf8.pdfIn PDF document text
    • https://cdn.sqhk.co/kezixowog/fSiifBP/school_driving_3d_game_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473903/normal_5fd62edd6a1db.pdfIn PDF document text
    • https://site-1173903.mozfiles.com/files/1173903/98486725343.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482671/normal_5fb8bcf3de72d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490121/normal_5fb9cec97f902.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417525/normal_5fc8694c84ba0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410199/normal_5ff137016b14f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365540/normal_5fe26c0d64da7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493597/normal_5ff305ded42fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366341/normal_5f8d272293a3d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373240/normal_5fedc1af33f6b.pdfIn PDF document text
    • https://cdn.sqhk.co/zururodi/cKidoCG/chicken_invaders_3_multiplayer_free_download_full_game.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/petikamov/alfalfa_sprouts_nutrition_information.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/22535524330.pdfIn PDF document text
    • https://s3.amazonaws.com/kozibowisenatu/how_to_root_android_using_pc_offline.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/bully_canis_canem_edit_pc.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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00011a98.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x11A98 2372 bytes
SHA-256: 4640c8d516c9fed92e5401905b5e6a0c0cbde11adeda7fd1bea1fd38a1d79fb1
font_00_sfnt_off00010839.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10839 5396 bytes
SHA-256: 36d130ececb06ef02e112cf2f84c48d09f1b88fde454693b495142dd1576ea24
font_02_sfnt_off0001258c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1258C 11008 bytes
SHA-256: 2208fa5c96a54458a365d17b7ae6a4983652003b1490fc08ecb2d84f2135f7d1
font_03_sfnt_off00014b9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B9F 16192 bytes
SHA-256: 4682b72f2afa33b20cf875d84024ffdd6778cb348d5560ed491e7fe37e149525

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