Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1a6d468d27e6358…

MALICIOUS

PDF

77.2 KB Created: 2021-04-03 22:51:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 2638693b83dd3c9d26a97092857e9769 SHA-1: 8132e0f28baae05ca63e55b77f84d530e65df64e SHA-256: d1a6d468d27e6358ff7ea7a3c80176c4b4f0d06e9788369e3146e0ff0b408483
164 Risk Score

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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/strik?utm_term=wheat+belly+diet+before+and+after PDF link annotation
    • https://xagewomovow.weebly.com/uploads/1/3/4/0/134040632/7008391.pdfIn PDF document text
    • http://ropibolexi.iblogger.org/nuaire_biological_safety_cabinet_manual.pdfIn PDF document text
    • https://valezuxaj.weebly.com/uploads/1/3/4/6/134650604/ee3212adfad04.pdfIn PDF document text
    • http://sobofikikovir.22web.org/bike_race_game_free_for_android.pdfIn PDF document text
    • http://zokorut.iblogger.org/43338818611.pdfIn PDF document text
    • http://tasuvelimu.22web.org/ati_nursing_books.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zebinagapovu.epizy.com/carcinoma_escamocelular_de_lengua.pdfIn PDF document text
    • https://1ec9b6e7-17eb-4e1e-a994-ba5ce4cbdb7c.filesusr.com/ugd/d4a9d6_869eacaeeb8041ecbc2689a7dfa94ac1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/the_champions_mind_how_great_athletes_think.pdfIn PDF document text
    • https://d0bf7e8b-5449-41c0-93e9-161603c0719f.filesusr.com/ugd/197ed4_d58ea381a60c4440aa89973ca160b181.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/novifamigot/81251048933.pdfIn PDF document text
    • https://b5c4f4dd-ae1f-4f6a-908c-f463551224e4.filesusr.com/ugd/dafd60_beba36198e9440cda43e4136fa537a46.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tinezedu/36799340571.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/xadulodufufumuwekiwamuzil.pdfIn PDF document text
    • https://78905da9-dd21-4190-abaa-c894c042e703.filesusr.com/ugd/851c7c_c688e0448eb94bed86c04b474b0b2f09.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/donake/i_love_you_full_movie_bengali.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/jogowofitodilanonagasamu.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/what_is_the_bolt_pattern_on_a_1999_ford_ranger.pdfIn PDF document text
    • https://f3dc8d0a-397f-4303-99a5-a7927e83d850.filesusr.com/ugd/e916cf_76ad27e5f76a40cc99e1032cb0aa7f00.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zizene/the_book_of_basketball_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/amd_radeon_settings_for_best_performance.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

Related samples 8

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_off0000f05d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF05D 5072 bytes
SHA-256: fa40abdd30efe7949579d19a8dc2b04d022be4d1692f0ad143b9d34f585b457f
font_01_sfnt_off000101aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101AA 11028 bytes
SHA-256: 4b2678e830406d3c1d855acdb6eaf1e1ad658125eed106ce2f09f4c8410699c9

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