Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec217070821dee3d…

MALICIOUS

PDF

82.3 KB Created: 2021-05-07 20:10:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: e08f57795f35613155493a564eeeefc1 SHA-1: 5c81c5ad932994362a8fab0915df82c7b3d675a9 SHA-256: ec217070821dee3def651f7318d8312150385ffa9c8e2e3fa3c93394efbc3c9f
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 0.9996

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/strik?utm_term=how+to+invest+in+stock+market+philippines+2020+beginners PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4376611/normal_606bf00e84a8d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478667/normal_603094a593d57.pdfIn PDF document text
    • https://cdn.sqhk.co/denugesugumu/jigRsid/bollyshare_latest_bollywood_movies.pdfIn PDF document text
    • https://fabidarupevonu.weebly.com/uploads/1/3/4/6/134620419/serejotevavifor.pdfIn PDF document text
    • https://cdn.sqhk.co/kesufetumo/qxhjYii/mozulovakezugosapu.pdfIn PDF document text
    • https://cdn.sqhk.co/xaranoraf/fhgxGcZ/30859379943.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463551/normal_606644cec0c53.pdfIn PDF document text
    • https://tixanesel.weebly.com/uploads/1/3/4/2/134234664/7949427.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420612/normal_5fd797022bc1e.pdfIn PDF document text
    • https://sijudunewofas.weebly.com/uploads/1/3/4/6/134696620/049b813.pdfIn PDF document text
    • https://cdn.sqhk.co/rabataxuvax/dgFij74/blood_pressure_drug_for_pregnancy.pdfIn PDF document text
    • https://cdn.sqhk.co/pigexebobe/CjhUL5W/carrom_disc_pool_game_hack_apk.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/e5755acb-7a0b-4b47-9e78-a75286ff1f43/korean_phrases_with_english_translation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a91297a-a7e5-4f3a-806e-05b81b1a2414/31969806576.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/jee_mains_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/quit_drinking_without_willpower.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5826ee94-825d-462b-b179-ae8121f9b28f/blackstar_id_core_40_v2_price_in_india.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03ac3322-3041-47a8-a560-24af5f705c25/focusrite_scarlett_2i4_drivers_1st_gen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db2546fb-0b57-4a25-9e54-2d2678807888/how_the_grinch_stole_christmas_poem_short_version.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78c9d004-b10b-49d8-9e32-952f28319639/kohler_14kw_generator_maintenance_kit.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/catholic_bible_filipino_version.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bc8e905-f29d-42f6-89ef-f58f90f40a28/xenezefezu.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_off00010222.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10222 5936 bytes
SHA-256: ca836c9554e32227dfb59cee3f547ea397304520114880064c90c77468b63c22
font_01_sfnt_off00011645.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11645 10964 bytes
SHA-256: cb0ec876de3b1fdeeb93eefccdcb35dfb6ef13fde3b05309c66300093c8bb336

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