Malicious PDF — malware analysis report

Static analysis result for SHA-256 6abd47d5e8fd3488…

MALICIOUS

PDF

74.9 KB Created: 2021-05-11 02:00:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51967b121d1ec6d2c6c1e72c2e472bff SHA-1: 6a65d895bcb580b76ba475cfe8bdea5ad0058a3c SHA-256: 6abd47d5e8fd3488cad0610096fa6f84132b55e29891daa83bd99b156f67473d
156 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a large number of external links, with one specific URL identified as a potential phishing or malware distribution point. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and external link farm suggest it's designed to redirect users to malicious content, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://dugedepap.ru/strik?utm_term=pals+volunteer+parkway
    • https://cdn.sqhk.co/fopujetoros/1ahEgjf/contract_killer_zombies_2_apk_android.pdf
    • https://cdn.sqhk.co/sidogorego/jana0hi/genimogul.pdf
    • https://cdn.sqhk.co/dejenuluzew/jfegcic/download_eve_special_forces_mod.pdf
    • https://cdn.sqhk.co/futevanu/icvAeig/53057506220.pdf
    • https://cdn.sqhk.co/fixijolexap/hhMjfMB/veteninulawopudafexapavo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/lanaladu/resumo_quimica_organica_nomenclatura.pdf
    • https://b354d503-40d1-4c97-84b4-bc0b16c12f35.filesusr.com/ugd/8c7d07_d82c6c74e7134377a61411c927cddfba.pdf?index=true
    • https://s3.amazonaws.com/muvazi/drawing_for_dummies_free_download.pdf
    • https://13dbc848-c95e-4197-a439-3ae2050b6ee2.filesusr.com/ugd/46bbe5_bc5472c12534434ca217cf26cd4771ed.pdf?index=true
    • https://s3.amazonaws.com/tugumeb/behaviour_management_book.pdf
    • https://s3.amazonaws.com/bifamomove/a_discovery_of_witches_season_1_episode_3_recap.pdf
    • https://0ef2f354-78a3-4528-990c-72f69c86fc6a.filesusr.com/ugd/6a0da6_aa601b1a2b40465cb50d020449de3967.pdf?index=true
    • http://tagijonegularol.myartsonline.com/vegetable_biryani_recipe_in_malayalam.pdf
    • https://976edc35-935c-46de-9e6e-e225dbc25668.filesusr.com/ugd/0829d8_8a9f72b9961c40549b6da5fab0ce9962.pdf?index=true
    • https://s3.amazonaws.com/tixedujegibex/e._l._f._beauty_inc_annual_report.pdf
    • https://c4bedd8b-a3e9-4aa8-9751-a6fde4035b7e.filesusr.com/ugd/037f08_f767b84ac5db413092a045a004c20ccc.pdf?index=true
    • https://s3.amazonaws.com/rorives/adobe_indesign_cs6_free_for_windows.pdf
    • http://lugivodunoxasi.atwebpages.com/33694465746.pdf
    • https://s3.amazonaws.com/mijumomub/jizajorubutunakubavito.pdf
    • https://s3.amazonaws.com/midizaxopazeji/sinut.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_off0000da62.bin
3994e2ef92a86c9f64347bf72c05218dc28fc817e9f78ebd355c5a848817cf83		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA62 4964 bytes
font_01_sfnt_off0000eb6d.bin
87dbe3a847ed27d7b39e9e23ad35237b26a5c1d39e0de643db4bbb1a7d243fb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB6D 10816 bytes
font_02_sfnt_off0001108d.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1108D 4324 bytes

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