Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b8edef547d8c9a2…

MALICIOUS

PDF

62.2 KB Created: 2020-10-17 20:02:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 95a47fbcdc66d83da4f4a50b3a803d59 SHA-1: 7a1d29db1fbf5ec3505948b8a9de2ecaac2c06f7 SHA-256: 1b8edef547d8c9a2054319a715427a66f2c6b488ecc47535bc58e0b37ccbe70e
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.link/123?keyword=reglement+interieur+restauration+rapide+pdf In PDF document text
    • https://xonimitofowe.weebly.com/uploads/1/3/2/6/132682232/1376720.pdfIn PDF document text
    • https://sulezesolujoseg.weebly.com/uploads/1/3/1/4/131452841/fabad-naxira.pdfIn PDF document text
    • https://fimosezit.weebly.com/uploads/1/3/0/7/130775491/wobonu-pozosu-nixegiwo-felisokifokax.pdfIn PDF document text
    • https://nukevokisoget.weebly.com/uploads/1/3/2/7/132711970/gokonuzabewareboteme.pdfIn PDF document text
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/3532263.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366958/normal_5f87c39c6f9f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377928/normal_5f8a3eeed20aa.pdfIn PDF document text
    • https://legadiduzavof.weebly.com/uploads/1/3/2/6/132681829/fusinun.pdfIn PDF document text
    • https://basuxebuj.weebly.com/uploads/1/3/1/3/131379820/pizil-tojirimo-bidesun.pdfIn PDF document text
    • https://kidunaxu.weebly.com/uploads/1/3/1/4/131437100/lefexoserizemojogi.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/kezupukono.pdfIn PDF document text
    • https://rutaluxunenore.weebly.com/uploads/1/3/0/7/130740368/20e96c8807.pdfIn PDF document text
    • https://gamupizesusaza.weebly.com/uploads/1/3/1/3/131398140/ketadovaguve.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/288ca.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/1/0266/9333/7264/files/16575977280.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/7481/8726/files/4524145896.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0607/3759/files/claudia_martinez_reardon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/8537/0022/files/types_of_clay_soil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/7382/3654/files/the_prince_of_milk_paperback.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9625/1810/files/42321901824.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1392/9630/files/solving_radical_equations_with_cube_roots_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/9789/3280/files/lufakaxewigosomagibazegur.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_off0000b333.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB333 5368 bytes
SHA-256: a841934ccca344bd553b97884ce8578ea7efd104ee7196e76e5cfebcad44d137
font_01_sfnt_off0000c561.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC561 11244 bytes
SHA-256: c353931f00056256a4c73b7702ca86e5e06014cd336d14d1617234970424a23d