Malicious PDF — malware analysis report

Static analysis result for SHA-256 817931bd179c6c8b…

MALICIOUS

PDF

69.8 KB Created: 2021-02-28 22:24:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 310651773d1f7dc2c2483ef61007a08d SHA-1: e45c6c43ff417315133bdd71c22b6ab224c5ddec SHA-256: 817931bd179c6c8ba5a7b8ca2e89d604263e096d6d64642ba78a710b9f61a78a
136 Risk Score

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jottigo.ru/award?keyword=microsoft+word+2010+vs+2016 PDF link annotation
    • https://cdn.sqhk.co/rufadexu/gi1hRne/podcast_app_iphone_is_it_free.pdfIn PDF document text
    • https://cdn.sqhk.co/velujuvaxal/gehazxJ/instagram_hashtags_for_likes_and_followers_photography.pdfIn PDF document text
    • https://cdn.sqhk.co/luwivimexu/ehaOhiR/4221695211.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383304/normal_5fdea188c6292.pdfIn PDF document text
    • https://cdn.sqhk.co/metexemoraga/7ohddKy/alienware_keyboard_software_aw768.pdfIn PDF document text
    • http://sevagawos.getenjoyment.net/pallet_jack_repair_service.pdfIn PDF document text
    • https://cdn.sqhk.co/fefamuve/dEhd6gt/sodexurekuwudirudunoxi.pdfIn PDF document text
    • https://cdn.sqhk.co/sumefixes/iggjgE5/81894328969.pdfIn PDF document text
    • http://taforojujutusig.mygamesonline.org/68290256435.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469370/normal_5fef540318e44.pdfIn PDF document text
    • https://cdn.sqhk.co/tororukiwuri/6NdcifL/mk_skins_for_mcpe_boy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483081/normal_60330c3d9081d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/likerajatob/19684302713.pdfIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/resek.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/rent_agreement_format_in_word_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/97577404149.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_off0000d467.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD467 5408 bytes
SHA-256: 20167f4c2f71aac40564d273f25d51408302d4cce9018df4297d230471c8eecf
font_01_sfnt_off0000e70f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE70F 10332 bytes
SHA-256: 9020738cdbdf057d34f2bdaa85baeaad9954eddf76b60586ee331b09b39a6657