Malicious PDF — malware analysis report

Static analysis result for SHA-256 fab6f1ab81eb067f…

MALICIOUS

PDF

79.5 KB Created: 2021-03-10 06:53:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 1a71c3508ef8e941651dce95910f397d SHA-1: e4726d71fd80e65075fec8441024728cafaa1d1f SHA-256: fab6f1ab81eb067f5f3c6f718a90a0dcce6a6bc87fe58519ed6babd1c984ff1b
134 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, and contains numerous external URIs pointing to disposable domains. The PDF structure suggests it functions as a link farm, directing users to potentially malicious websites. While no scripts were explicitly extracted, the presence of external links and the 'link farm' heuristic indicate an attempt to redirect users, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://leonvi.ru/123?utm_term=biztalk+server+2016+developer PDF link annotation
    • http://gratoraama.space/47346126756knpnq.pdfIn PDF document text
    • http://catsism.com/19494154498r3w8q.pdfIn PDF document text
    • https://cdn.sqhk.co/lemusezilaz/uibvRia/don_t_rush_remix_naika_mp3_download.pdfIn PDF document text
    • http://gojawufeki.getenjoyment.net/dilosuzekexivifu.pdfIn PDF document text
    • http://javefuxola.getenjoyment.net/81917169882.pdfIn PDF document text
    • https://cdn.sqhk.co/sinemajud/qfihAje/zombie_motors.pdfIn PDF document text
    • https://cdn.sqhk.co/negixakozaxu/bqggifM/firegifuzikivonaxowiluf.pdfIn PDF document text
    • http://usene.xyz/kotanenixeviwinezipekunbyzua.pdfIn PDF document text
    • http://1-bog.ru/xobogotetm5ym.pdfIn PDF document text
    • https://cdn.sqhk.co/tavaxikanabu/LMPhbhc/78996946093.pdfIn PDF document text
    • https://cdn.sqhk.co/dajuzafum/ecXtkvl/the_sweet_house_llc_rowlett_tx.pdfIn PDF document text
    • http://migerov.xyz/how_much_do_crossfit_owners_makeg8nnb.pdfIn PDF document text
    • http://jilet1.club/splashy_fish_storesgsk1.pdfIn PDF document text
    • https://cdn.sqhk.co/lisakopew/ggHyLge/22903614886.pdfIn PDF document text
    • http://matras-24.ru/xagupixewugibarixajemo7gv.pdfIn PDF document text
    • http://teachost.com/tesakitiniserivawek952n.pdfIn PDF document text
    • http://zizodoroluxonaf.sportsontheweb.net/36149456216.pdfIn PDF document text
    • https://cdn.sqhk.co/tixukiko/aCIeDic/100_bundt_cake_recipes_easy.pdfIn PDF document text
    • https://cdn.sqhk.co/sevigexew/h4ijj1x/multi_color_label_printer.pdfIn PDF document text
    • http://biomaniix.website/minn_kota_powerdrive_i_pilot_kitubqqe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f500.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF500 5656 bytes
SHA-256: 9f265d181d9e756e3ec36e30690bc84939e3a23db9a932eb8a918d69c368b555
font_01_sfnt_off0001085e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1085E 12464 bytes
SHA-256: 6200714d5d18ae7a5f545c41a416aa255bb4f325753d51bbed36d0f4a637a8e8

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