Malicious PDF — malware analysis report

Static analysis result for SHA-256 33401d7cecca0008…

MALICIOUS

PDF

42.1 KB Created: 2020-10-19 22:23:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: da03f38879a37d6fb4c78a19a82a0094 SHA-1: 418ee295f8fdc6f16365704efaab688e6a7fa0aa SHA-256: 33401d7cecca0008e3cc213486b9b4cff6ef933d9e163ef2b901bb643e1d96ad
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/pify?keyword=play+store+download+apk+for+jio+phone In PDF document text
    • https://medizagokitoni.weebly.com/uploads/1/3/2/3/132303310/2145604.pdfIn PDF document text
    • https://wajiresejepo.weebly.com/uploads/1/3/0/7/130774962/337085.pdfIn PDF document text
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/3030887.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/6431815.pdfIn PDF document text
    • https://sesuwulot.weebly.com/uploads/1/3/1/4/131438847/xazukaxodizowuwas.pdfIn PDF document text
    • https://medizagokitoni.weebly.com/uploads/1/3/2/3/132303310/zejujurozutuzepu.pdfIn PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/xugimogolesenem.pdfIn PDF document text
    • https://penulikadima.weebly.com/uploads/1/3/1/4/131482887/e811c8d033370.pdfIn PDF document text
    • https://xavujome.weebly.com/uploads/1/3/0/7/130739328/fatuzuzi.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/1/0266/9572/9348/files/atomic_math_challenge_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8526/1717/files/lanibogepopatod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4030/7362/files/jhs_color_box_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bf20b32-2450-4768-8312-12a84b20b2a2/96232155498.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4a83f14-908a-485e-bad8-e21abce3543c/monogezaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/1080/4890/files/zirobumab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2094/9403/files/87452353736.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fec2f5e-bbec-443b-903d-360b9eafd0a1/49868639051.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09669ea8-95f8-4871-9d40-2938a075dcd5/bixixepulidezoxoxurer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a52113cd-9759-449c-ae22-5835c8a1cdf3/43162166180.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af14bb53-e7cf-4394-9759-d9014ca39111/19896006619.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_off00006695.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6695 5464 bytes
SHA-256: b5daeed3ee83f0daaa6df9d161f5ecb35ac70b90e2bb17fbd92b8b0a9aa5994b
font_01_sfnt_off00007943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7943 9868 bytes
SHA-256: 04d79aed0828906234d07c49464358a67e725ac4723928ddcb4be716f9e760f8

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