Malicious PDF — malware analysis report

Static analysis result for SHA-256 c276406848013ab3…

MALICIOUS

PDF

76.8 KB Created: 2021-03-11 10:57:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 589052603f357ad90c3a87bf7ce8febf SHA-1: 88d6e060b87d394e6ba7bf3e5b5c7c30fb002bb0 SHA-256: c276406848013ab3630ce2b327a1981a9afd30b5893060ffd030980ff29d05b6
156 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous external links, including one that appears to be a lure for a 'free keto diet plan'. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic suggest an attempt to distribute malicious content or redirect users to malicious sites.

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://mezovuduw.ru/award?keyword=free+21+day+keto+diet+plan+pdf PDF link annotation
    • http://zomolejefej.mywebcommunity.org/2329372834.pdfIn PDF document text
    • http://lajodibibodi.getenjoyment.net/how_to_dpf_regeneration.pdfIn PDF document text
    • https://ditowesoxuro.weebly.com/uploads/1/3/4/8/134885058/4bb3867.pdfIn PDF document text
    • https://venunuwaxel.weebly.com/uploads/1/3/2/7/132740799/gesomagavuva.pdfIn PDF document text
    • http://bikelumonekodex.mygamesonline.org/voxijixafurosiloninit.pdfIn PDF document text
    • http://zugapuvu.mywebcommunity.org/chilton_auto_repair_manual_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c17ddf0a-53f6-462e-b06b-20562df80523/galiduwalogajikonad.pdfIn PDF document text
    • https://s3.amazonaws.com/tesasubawalozan/zexubegiwaf.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/44200004563.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d967b102-597c-4a7e-856b-f6f484f11602/suzuki_drz400s_maintenance_schedule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c01d95a-d432-476e-8d23-94c3896a172e/36503625090.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/body_parts_of_birds_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/petubapizo/can_you_make_pot_roast_in_a_pressure_cooker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0a251bd-4cb4-48d4-9dc7-2543cc5def78/how_to_write_poetry_in_an_essay.pdfIn PDF document text
    • http://sasukagisodubex.onlinewebshop.net/stihl_fs_85_pro_carburetor_adjustment.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/49484157815.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/96557448522.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/attu_movie_songs_320kbps.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff76f419-d4bc-4aeb-9cbc-a8e778c6d1e0/1st_grade_math_worksheets_free.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f08e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF08E 5164 bytes
SHA-256: 7ddc48ced8cbc76f2ebf47d06ff2efb2cbfb2085046ecd1680cd05061927361b
font_01_sfnt_off00010245.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10245 10480 bytes
SHA-256: 9f377a5a97286261cac5ab17b3c2513fa30972909f8bf97a61656ac819b6bcd9

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