Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bc002f6a4872dcf…

MALICIOUS

PDF

43.9 KB Created: 2020-10-15 18:34:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d8d864f44744dd223cb53d027a7b650e SHA-1: 7e9e4856f43e383d52e5c409c6901431c00c857b SHA-256: 1bc002f6a4872dcf94e9df275149ca022fed0947e4b6ee92a32085802e8aebf9
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://cctraff.ru/123?keyword=tecido+epitelial+resumo+pdf In PDF document text
    • https://gapefupekud.weebly.com/uploads/1/3/1/8/131871489/menuva-sogepirib-palonuvofadujem.pdfIn PDF document text
    • https://rabexowubomisuw.weebly.com/uploads/1/3/1/4/131407155/novotumozu_fibiguwepog_pemadil.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/9247351.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368497/normal_5f88602e94901.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367283/normal_5f876488c5e8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366029/normal_5f86f46d97368.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365628/normal_5f870c32d0046.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365551/normal_5f883e565bc5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366984/normal_5f875e588192c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365539/normal_5f871bd697ec7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367621/normal_5f874909b6cac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/8744/4133/files/89058944907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7921/4265/files/52580922450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2509/5062/files/gojinironafe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/3398/6725/files/que_son_las_normas_iso_9000.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7604366-718c-4d8b-bed7-d5ed8f523b2b/doruwipijurat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64cfbc46-2d9f-401c-bb71-f3262a86cbae/walukirofujubonakidelo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03a8f431-ea12-477b-b8ec-436419271f87/mimaborefefutasojodovewor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/088713db-1e07-4370-b908-0b4d2beb8b04/gufowonusagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5992/7448/files/38314023768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6216/4644/files/fajalajuxebesujamudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4849/3475/files/74113706790.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8661/8017/files/63087010435.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3165/6605/files/1763227552.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_off00006db6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB6 5248 bytes
SHA-256: 6313c96c30b2c1e1932a1334754e17d7eeb95ad6e19005162ec7a37aaf350fdb
font_01_sfnt_off00007f6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F6D 10384 bytes
SHA-256: d3f93548c7d229ebcb59fbdb26fd7a95d30588c7169253183727686a515cf30d

Open this report in the interactive analyzer, or submit your own file for analysis.