Malicious PDF — malware analysis report

Static analysis result for SHA-256 edc354794b9666c0…

MALICIOUS

PDF

78.6 KB Created: 2021-03-08 09:48:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d34dc33742694545502c98855867811 SHA-1: 2b861dcbec82c8544aedf6d3fa9ca1b6a6dc1067 SHA-256: edc354794b9666c02c41d0cfaeb9ce627c490006a70106ce1264be6fdaee6d7a
156 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. These links point to various domains and appear to be designed to attract traffic, potentially for phishing or distributing further malware. The ClamAV detection and ML classifier strongly indicate malicious intent. No scripts were extracted from this sample, but the structure suggests a malicious document designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://kuzutuzo.ru/strik?utm_term=oracle+sql+plus+12c+download
    • http://rexonina.medianewsonline.com/how_to_use_schumacher_battery_charger_se-82-6.pdf
    • https://nejajabowiwuxo.weebly.com/uploads/1/3/0/7/130775705/2646925.pdf
    • https://cdn.sqhk.co/xuxiropuwomo/jUjfjf4/95977523157.pdf
    • https://cdn.sqhk.co/modonasuje/hc4lhiU/tycoon_casino_free_vegas_jackpot_slots.pdf
    • https://cdn-cms.f-static.net/uploads/4489595/normal_60260215bb84f.pdf
    • http://vkysnaya-eda.site/pesumamilewurefukijazajyyzx.pdf
    • https://static.s123-cdn-static.com/uploads/4492900/normal_60096be03a0e6.pdf
    • https://cdn-cms.f-static.net/uploads/4473030/normal_5fea34838eae4.pdf
    • http://lovechat24.club/derivadas_implicitas_ejercicios_resueltos_paso_a_paso66e6z.pdf
    • https://cdn.sqhk.co/kerametunal/eMBhjhg/4_pics_and_one_word_8_letters.pdf
    • https://cdn.sqhk.co/zezinojox/ehfjh87/latest_worldwide_box_office_collection_koimoi.pdf
    • https://vikalixasu.weebly.com/uploads/1/3/4/6/134631782/31ce077ea3.pdf
    • https://cdn.sqhk.co/toviranevu/NijMhiI/42085152941.pdf
    • https://cdn.sqhk.co/zaniridut/eZbifgi/super_nintendo_star_fox_2_rom.pdf
    • https://loxoratas.weebly.com/uploads/1/3/4/5/134507201/neler_vemonanalubigod_xumosafariko.pdf
    • https://cdn.sqhk.co/gidufulelav/a912Bgh/the_adventures_of_tintin_trailer_1.pdf
    • http://ladyso.ru/what_cameras_are_compatible_with_swanny5f7x.pdf
    • https://jegobagugixados.weebly.com/uploads/1/3/4/8/134858953/manew.pdf
    • https://cdn.sqhk.co/raninogozo/hgegcgf/jadaxat.pdf
    • https://cdn-cms.f-static.net/uploads/4402520/normal_600e5f7e51112.pdf
    • https://zikowajemaje.weebly.com/uploads/1/3/1/6/131607239/fc1722dfbef31a.pdf
    • https://cdn-cms.f-static.net/uploads/4420222/normal_6025f1a9a844b.pdf
    • https://cdn.sqhk.co/depifozopupe/ckihyij/bonasukulidun.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gumomexad.onlinewebshop.net/30274448418.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f47e.bin
b2b24573a530f370ea28fb444c174fa60cc5054083665205566efd2c857f00d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF47E 5496 bytes
font_01_sfnt_off00010751.bin
2c510aedeb6fd08549cc4621dc31d7f02ae082cb7acee0cbcd06aaddf3c7b9f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10751 11048 bytes

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