Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a61c5a7c34f24bc…

MALICIOUS

PDF

41.8 KB Created: 2020-10-25 20:46:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 3260479a77b8ba7d5280ce61d307d78b SHA-1: a6126711fa463c62818156f89df68d21ec1523ab SHA-256: 2a61c5a7c34f24bc98ba9ba448a870e4b4a95531cbf1f2351fb60840237abe76
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/aws?keyword=international+business+and+global+strategy+book+pdf In PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/xududev-ledavodu-jatulivarolaxe-bixebenal.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/wokokagegegaxopefus.pdfIn PDF document text
    • https://sisaseno.weebly.com/uploads/1/3/0/7/130776680/3127604.pdfIn PDF document text
    • https://zeginuvo.weebly.com/uploads/1/3/0/7/130775519/853634307.pdfIn PDF document text
    • https://damijuvik.weebly.com/uploads/1/3/1/3/131381376/cd56bed.pdfIn PDF document text
    • https://givexikiduxa.weebly.com/uploads/1/3/1/3/131398224/nivojo_dasesiginisowob.pdfIn PDF document text
    • https://gogebuzavoriro.weebly.com/uploads/1/3/2/6/132681212/fd4046ec8e.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000660b.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000660b.bin)
    • https://cdn.shopify.com/s/files/1/0428/9737/5388/files/vetalanotule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5790/4792/files/jersey_mikes_calories_2.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/76629866300.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/wixexomarasufuvuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/7957/4180/files/jupetadabajuve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0162/0898/files/monster_hunting_lords_mobile.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/scripps_national_spelling_bee_2020_word_list.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/46898395743.pdfIn PDF document text
    • https://s3.amazonaws.com/tadevewuju/34381555242.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/maslow_bedrfnisse.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_off0000660b.bin)

Related samples 8

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_off0000660b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x660B 5452 bytes
SHA-256: 53303c6214ef626e9229c28515ced36250efd31ade28e106aa93463eb41333c9
font_01_sfnt_off000078a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78A1 9812 bytes
SHA-256: 017488668969193820435702016ebb70798dc253423aacc76e667ee68445d2f2

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