Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdd28022c3750333…

MALICIOUS

PDF

65.1 KB Created: 2020-10-25 11:52:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b69f1eef8ff20bb454daa61ed35b92c5 SHA-1: 2f2c3ac6f15a6eca3b7c2af1705e231c6758940c SHA-256: fdd28022c3750333b47eca76bd38ffb1a8c2ce30b879d358430d6a6a53ee96d0
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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://ttraff.me/pify?keyword=contoh+soal+persamaan+diferensial+eksak+pdf In PDF document text
    • https://wajiresejepo.weebly.com/uploads/1/3/0/7/130774962/2930663.pdfIn PDF document text
    • https://kilutiwoxit.weebly.com/uploads/1/3/1/6/131636983/kiwufolaxe-jolunilufa-giveja-wijadov.pdfIn PDF document text
    • https://fosogaji.weebly.com/uploads/1/3/1/4/131455903/favosinajefexi.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/61649c64-65f5-459f-91fe-9958a3bcc3b4/49438858417.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/311490d2-abf5-43e8-87cd-303ffde77f06/pabujidax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9c96477-6cbf-4702-ad2b-e534deca22b6/halo_punk_bilbao.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/13415253017.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/biocentrismo_robert_lanza_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/827903250.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/vorawi.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/21907098144.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8405d70d-235a-4e43-bfee-6feb7dcfb1e3/64200517847.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e0997d9-1d29-4904-a8b2-511c73547e00/29531766107.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b663b11c-6e58-4d8a-8d5f-13b835fa0867/37494699977.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fb9172d-db7c-467b-90f2-14090b97f33f/xawotu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b5cc011-271b-4c7e-9904-a4d06367531b/bidupeka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fbc6910-cd3a-414d-95b1-4c4b2edfa53f/wofolupomotowuve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0de58f12-f535-4b47-9e12-4e67b467e1e2/fepibibivixazebijiku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5960/1830/files/1989_honda_prelude_service_shop_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/6370/4255/files/1390917835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6431/0425/files/xutipeseremokumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4387/9594/files/petosulaxenapumoti.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_off0000c06f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC06F 5248 bytes
SHA-256: a9d6f7ad5823b7c6e0625c87953a50ea684b30846b9325c1786cc66968606f00
font_01_sfnt_off0000d21a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD21A 10732 bytes
SHA-256: 20537d699e8bdd7ae95e517994cb18b67be1e3961fc2e5360e744be3686b9eca