Malicious PDF — malware analysis report

Static analysis result for SHA-256 edb60b980ef41eac…

MALICIOUS

PDF

92.5 KB Created: 2021-03-30 11:05:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae59d0aeae72538702ce34d838d5505a SHA-1: ae9d2e4d5cca6a75e9e94c6a026ee9692ebd2491 SHA-256: edb60b980ef41eac0656ad00d78d603fff61a141adbc9ddf23918e7b3be1e4b4
156 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 numerous external links, with one prominent link pointing to a URL that appears to be part of a link farm designed to distribute SEO-optimized PDFs. The presence of embedded external URIs suggests the document is intended to redirect users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/award?keyword=bangladesh+railway+job+application+form+pdf
    • https://static.s123-cdn-static.com/uploads/4466379/normal_5ff812cb5114a.pdf
    • https://cdn-cms.f-static.net/uploads/4426974/normal_603ef4be1eeb9.pdf
    • https://cdn.sqhk.co/sobetevod/FrCieQ4/pokemon_go_hub.pdf
    • https://cdn-cms.f-static.net/uploads/4372100/normal_605ccbbf26a4d.pdf
    • https://cdn.sqhk.co/subogutaze/aqVacji/stress_management_definition_in_tamil.pdf
    • https://cdn.sqhk.co/fogunedevare/hfHkghv/14844264132.pdf
    • https://cdn-cms.f-static.net/uploads/4450890/normal_5fdb6693b0e3e.pdf
    • https://cdn-cms.f-static.net/uploads/4475563/normal_6033ff306f5a5.pdf
    • https://cdn-cms.f-static.net/uploads/4384650/normal_60256191debdb.pdf
    • https://cdn.sqhk.co/salefudodid/9gVgcgh/quillbot_premium_account_hack.pdf
    • https://cdn-cms.f-static.net/uploads/4486061/normal_602e1825122b7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/gowupuzokowuxes/seredivamepededa.pdf
    • https://858e1da1-ad31-4e5b-aec0-89c59c6c71f6.filesusr.com/ugd/6240f8_26937f4e6cd64690b1acc8e08594d2a8.pdf?index=true
    • https://c20a02f1-eded-46de-afbf-2d7328e03b26.filesusr.com/ugd/c6fd25_91d3f36c208c49d9b6ee5de72a7a11d3.pdf?index=true
    • https://s3.amazonaws.com/fajixe/how_to_connect_zagg_keyboard_to_samsung_galaxy_tab_4.pdf
    • https://s3.amazonaws.com/xonobijikivo/stremio_ios_apk.pdf
    • https://s3.amazonaws.com/towutoginadivu/macbeth_act_3_scene_4-6_summary.pdf
    • https://9f9bd9fa-00fe-4673-b34e-9a629881f524.filesusr.com/ugd/09273f_38c4953c2cf3417f8ba5b9f287ccc506.pdf?index=true
    • https://s3.amazonaws.com/godoremitiwuja/new_content_announcement_email_format.pdf
    • https://s3.amazonaws.com/dubiditiginowo/39153629832.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f402.bin
2d05ebcb8ddc6d8b2f22e35a31b15e06416c9ed80ebd1a1300776ed341eb5ef6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF402 5816 bytes
font_01_sfnt_off000107a6.bin
dc9518a76c30c3af2c4b15bbdbca9a5fc36108b1ec9c120ae9cd1d2d64a1d3df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107A6 12180 bytes
font_02_sfnt_off00012eb2.bin
286288b399bae9fd954afca9a96b72d3eb356f24d6b0f10c0a8f49a01cd6b0bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12EB2 10872 bytes
font_03_sfnt_off000153c4.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x153C4 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.