Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e61e58c8a761862…

MALICIOUS

PDF

70.6 KB Created: 2021-02-15 05:16:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1ddcf09e3178989f8d9c77854c429cd8 SHA-1: b3b75718fb9c5dabe6351b3159dae7be69f4586e SHA-256: 7e61e58c8a76186287ea74d720a779b65406898c51df3811ac051ecd33168c5f
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://bologen.ru/wix?keyword=guided+meditation+spirit+guide+sleep PDF link annotation
    • https://cdn.sqhk.co/rifojimuna/riejejd/france_simulator_2_astuce.pdfIn PDF document text
    • http://detonic-ufficiale.website/diya_aur_baati_hum_song_audioc3yka.pdfIn PDF document text
    • https://cdn.sqhk.co/pezolaje/ifmhdwo/smart_meter_energy_consumption.pdfIn PDF document text
    • http://tendernes.ru/aplikasi_video_gif_twitterm3ydu.pdfIn PDF document text
    • https://foxazejepanobo.weebly.com/uploads/1/3/1/6/131637169/xeworonijetalofasuz.pdfIn PDF document text
    • https://cdn.sqhk.co/sizozizaj/f3iepjc/trails_system_iowa_city.pdfIn PDF document text
    • https://xoruvuxana.weebly.com/uploads/1/3/2/6/132696063/taxotivezoli.pdfIn PDF document text
    • http://sedouche.xyz/bts_guidelines_for_asthma_and_copdlv8c3.pdfIn PDF document text
    • http://itabody.space/gvp_module_v_rmp_templatel4eq5.pdfIn PDF document text
    • https://cdn.sqhk.co/nobukomorur/i3Xgdgg/gifovibolijalixel.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuperik/hcBidjg/zelulopunitonafamuxina.pdfIn PDF document text
    • http://uchebnoe.website/classical_mechanics_taylor_chapter_7cfcay.pdfIn PDF document text
    • https://muvekova.weebly.com/uploads/1/3/5/3/135394778/ramukuxi.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/voxazedisula/67474648567.pdfIn PDF document text
    • https://s3.amazonaws.com/jubiferekaka/calls_blacklist_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/14145043904.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/revenue._ie_assessable_spouse_election_form.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/datetimepicker_c_format_custom.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/nekuzokoribulapeboz.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_off0000d9e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9E8 5312 bytes
SHA-256: 02ad08d9328f65ee90656b99815af11e7161ace72c618d713bdde18622bd70c6
font_01_sfnt_off0000ebdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBDD 9576 bytes
SHA-256: 3b4975f24415f7d220985eec5aba35390434458dee2e69ade0355b77eda44d6c