Malicious PDF — malware analysis report

Static analysis result for SHA-256 f40aac29e1e0b590…

MALICIOUS

PDF

78.5 KB Created: 2021-03-31 01:54:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: ebba2ebd5fefb4c3b6a2d7dd7237188b SHA-1: 198421907fdbf122256a434464e03550e91a56fe SHA-256: f40aac29e1e0b59034ecacac0687cbf4488ab94220cb224ee0e0282e685c63ec
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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/wix?keyword=grout+gun+for+tile PDF link annotation
    • https://cdn.sqhk.co/xawobovuji/HgicMjg/bewigabetatikirek.pdfIn PDF document text
    • https://cdn.sqhk.co/luvutagawata/ggjavdd/dig_in_sand_free_ball_games.pdfIn PDF document text
    • http://rosutob.getenjoyment.net/bern_switzerland_map.pdfIn PDF document text
    • https://cdn.sqhk.co/kizafizutuw/c81diig/galaxy_shooter_alien_attack_cheats.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379984/normal_6027e6ed4303b.pdfIn PDF document text
    • https://cdn.sqhk.co/ferazujobogu/neggjjJ/wallet_certification_card_template_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488330/normal_6027844850699.pdfIn PDF document text
    • http://lemafesopeposuz.mywebcommunity.org/centrifugation_of_blood.pdfIn PDF document text
    • https://cdn.sqhk.co/mitugejaxel/idpifjf/rizin.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jirebonudur/eliminator_squad_40k_datasheet.pdfIn PDF document text
    • https://1c437d0a-cccb-4a8a-93f1-39e0b5126915.filesusr.com/ugd/b91566_9dbf5ba2bd824d2d9e2bfe2d0e3d8bdc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xomudufe/lokugew.pdfIn PDF document text
    • https://cb71deac-5427-4a11-aec2-6feec017c243.filesusr.com/ugd/4cd983_57b63af127c74f3da6db71276b21c738.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/gramatica_espaola_mejor_libro.pdfIn PDF document text
    • https://77701ba7-c5ad-4750-ab17-5b03548f7fc0.filesusr.com/ugd/9a242c_b5175f2dc21a443e923ad97633922d89.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sazomo/17_day_diet_cycle_2_weight_loss.pdfIn PDF document text
    • https://s3.amazonaws.com/lekelepowo/quality_non_conformance_report_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tapelu/leave_of_absence_template_letter.pdfIn PDF document text
    • https://c1cb471f-fc5c-4ef2-b3e1-4d0d0d09d135.filesusr.com/ugd/cc5b41_66ea27581e7d4747bf1c947647b4cc84.pdf?index=trueIn 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

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f53a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF53A 4580 bytes
SHA-256: cd94796cda37b355b56c9f3bac3945c7f14e805e1fd9d4875d6acfe8378a52e4
font_01_sfnt_off000104eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104EB 11440 bytes
SHA-256: eb2d93a7f7dc3eee7700c22bbdaeea6f5765b47f75f226b59e7e42af36c16e5b

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