Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef98f1cd112ea5b6…

MALICIOUS

PDF

45.8 KB Created: 2020-09-30 07:36:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: efc60ca502fd169657ba760ee8190b82 SHA-1: e65f5c83cc0d87e6cdf82a546efc795f5422bb23 SHA-256: ef98f1cd112ea5b6da69f4eb8d281b39840c4395c25436567bd5ae08863b4cca
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://gettraff.ru/strik?keyword=wavelet+toolbox+matlab+pdf In PDF document text
    • http://files.carolineparsonshypnotherapy.com/uploads/1/3/0/7/130776875/da5b29a.pdfIn PDF document text
    • http://zizama.wizzardsjanitorial.com/uploads/1/3/1/3/131398027/pipuseboniwat.pdfIn PDF document text
    • http://files.italiancitizenshiptranslator.com/uploads/1/3/1/3/131381881/fapalinatemi-rokotukin-doluripat.pdfIn PDF document text
    • http://files.northernstoragesheds.com/uploads/1/3/0/7/130738548/garuvirap.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/1/0429/6137/1290/files/wiforuperab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5526/6454/files/8458515475.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6387/2150/files/infrared_fireplace_log_insert.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/0272/0166/files/watch_mad_max_fury_road_online_free_reddit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4364/2792/files/devil_may_cry_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9168/8610/files/93640996582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9212/3560/files/furimadezirafomoxed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9095/8749/files/brooch_designs_templates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2091/7668/files/funimefalizefan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6971/9199/files/saluposanevafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3485/9941/files/jajomapojakizufugirijiwin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2620/8152/files/bavinudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4915/5740/files/pibidurabigito.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69CF 5192 bytes
SHA-256: a356cd418b04f710c88e5219a2761cbd8691319a8c01e237731e6fe47e50d2b9
font_01_sfnt_off00007b80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B80 14096 bytes
SHA-256: b81e0cdb6f74e242ae01d902a3130291959354e8eb382a7a661935f400bfd924

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