Malicious PDF — malware analysis report

Static analysis result for SHA-256 48fc2d9308637741…

MALICIOUS

PDF

73.7 KB Created: 2021-03-24 04:55:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: eb01ff2ae81766a3ae25d669ec3fe8f9 SHA-1: 8fe68efc1e4829c2a4b5c9074df5395a62583cd7 SHA-256: 48fc2d9308637741872e9f0438a55fc867765ab1ae92279fbd70accd8d093060
156 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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://nipisod.ru/aws?utm_term=runny+babbit+read+aloud PDF link annotation
    • https://cdn.sqhk.co/jedelamodafa/bieChgy/high_table_and_chairs_for_game_room.pdfIn PDF document text
    • http://dsv-trening.ru/55584832692zbx1e.pdfIn PDF document text
    • https://cdn.sqhk.co/kuwusemob/ChJqhfz/maxeruzigijuk.pdfIn PDF document text
    • http://options.expert/officejet_pro_8610_printheadqsghv.pdfIn PDF document text
    • http://presentinsta.online/xopitiriwovesobinimd9.pdfIn PDF document text
    • https://cdn.sqhk.co/savujegu/hdjbhc2/99810410823.pdfIn PDF document text
    • http://storedubai.shop/the_rise_of_scourge_mangag7ur3.pdfIn PDF document text
    • https://cdn.sqhk.co/dakagugi/hjcQmN0/rekomendasi_anime_slice_of_life_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fekife/29703225963.pdfIn PDF document text
    • https://d56a38bf-d62e-453c-9b5b-5b2fe88aea46.filesusr.com/ugd/359e64_2314fd0e3acc4a808ee3aa6526977b94.pdf?index=trueIn PDF document text
    • https://196cdf53-7a38-4f80-8f5e-3ad65c24f50e.filesusr.com/ugd/e5a593_bbc76f3b08bf48bdb8466952abfc54cc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zowibatev/70430100054.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88b19a26-f5b5-4dd1-98d4-a7c08b859bd9/what_does_it_mean_when_a_gfci_is_blinking_red.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a755c4a-f58d-4053-aa7f-62e2b6c74bec/34345679612.pdfIn PDF document text
    • https://d572dbd6-ec42-402e-884a-3db6daac2318.filesusr.com/ugd/6a558d_d851873722fa41349a0b6139b6c3402f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/varolexexus/sidejulanujab.pdfIn PDF document text
    • https://s3.amazonaws.com/lurutopobi/82909330845.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f3426ab-549b-435d-9d47-a7015ed5a02d/bexizifedolil.pdfIn PDF document text
    • https://6ddb26ad-aa8e-4a3e-a925-5cef6fc035e1.filesusr.com/ugd/d3d820_77cc88a0baa54a5dac20d67a8bb81982.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/saltwater_fishing_equipment_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/burner_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/que_significado_tienen_los_tatuajes_de_flechas.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/potum.pdfIn PDF document text
    • https://s3.amazonaws.com/nevowimo/1352586585.pdfIn PDF document text
    • https://0eb00d84-361a-45dc-b346-1af5c8eb785c.filesusr.com/ugd/d79848_68084faea10940c1ae13135bbd53aa30.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zamuriza/88370340307.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d535.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD535 4772 bytes
SHA-256: 9c10b91cff9f3af8655e6868a982333392fc9e78c5bfe0ac7aff3c5c867f6c65
font_01_sfnt_off0000e579.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE579 10732 bytes
SHA-256: 3f8312e3948755e1808f63ce346c82cfd02878655d7c59d98e6a9ec14cb78b68
font_02_sfnt_off000109d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109D2 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333