Malicious PDF — malware analysis report

Static analysis result for SHA-256 27fcd5117da01a0f…

MALICIOUS

PDF

42.9 KB Created: 2020-11-01 13:33:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 2ecc1074e8d4b44e7e642c8459d453ec SHA-1: cd96e9f63029e6152077a7bbecb6c9b4c1acfb57 SHA-256: 27fcd5117da01a0f7df3a1ec30bb6efc88c9f14b3b24a58cdf4fdccd23299651
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/aws?keyword=dragon+age+awakening+gifts+guide In PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/5771879.pdfIn PDF document text
    • https://vodipewelo.weebly.com/uploads/1/3/1/6/131637384/morawunut.pdfIn PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/9839233.pdfIn PDF document text
    • https://kivuligob.weebly.com/uploads/1/3/0/8/130874143/jogebixetozava.pdfIn PDF document text
    • https://voxapinave.weebly.com/uploads/1/3/2/7/132740917/kiguvaniziruno_miniturepi_vawuguk_gikatazexibu.pdfIn PDF document text
    • https://lifotuvuzaraxur.weebly.com/uploads/1/3/0/7/130775275/b998bee.pdfIn PDF document text
    • https://porelananov.weebly.com/uploads/1/3/0/7/130775759/jufukabovozan_pimufasumaguxu_paligedepis_watolom.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005b07.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005b07.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000908f.bin)
    • https://s3.amazonaws.com/bagisi/feral_cat_feeding_station_plans.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0a2051f-d268-4a1e-9223-02a9ee8352b0/ziwurewerotife.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/smartphone_addiction_scale.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/56144960467.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/murmillo_gladiator_fighting_style.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/bevunapodok.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/35266664661.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afedfb21-32ac-4140-819c-43fa6d6d7f82/webixegiwegupunof.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/acfe_report_to_the_nations_2018.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 extracted file (font_00_sfnt_off00005b07.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B07 5080 bytes
SHA-256: 75648fae5244ac99f1de68e3d03a63c1e2f6404c89a8c26d84e9e484cfeb55bf
font_01_sfnt_off00006c72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C72 10632 bytes
SHA-256: bdab7816fc78d635c0bac2988462f9a37b216f856f453b6a88ac76dd550686b8
font_02_sfnt_off0000908f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x908F 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3