Malicious PDF — malware analysis report

Static analysis result for SHA-256 249f4466cbf6f761…

MALICIOUS

PDF

37.1 KB Created: 2020-10-09 00:10:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: caae89bb979de7f0ce89d5511f3fab4c SHA-1: 39e540f623b3efb84245940b28752725113f5883 SHA-256: 249f4466cbf6f761a081ab16a90cf991cf315e3d3c7b9c046a7afb68dd101914
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.club/pify?keyword=sword+art+online+season+2+episode+1+bg+sub In PDF document text
    • http://files.thegymnasticsconsultant.co.uk/uploads/1/3/1/4/131454317/0babc751cf369.pdfIn PDF document text
    • http://files.norledgemaths.com/uploads/1/3/0/8/130874474/zabosilularedadusi.pdfIn PDF document text
    • http://nawonew.a-1autoinc.com/uploads/1/3/1/4/131453724/sozavosijun-gizamugano-xaxusufuzevi.pdfIn PDF document text
    • http://files.speakingoutaboutsuicide.com/uploads/1/3/1/8/131871714/lanuxit.pdfIn PDF document text
    • http://files.deruitergreenhouse.com/uploads/1/3/2/6/132682106/5505620.pdfIn PDF document text
    • http://files.saraacton.org/uploads/1/3/0/9/130969699/2035827.pdfIn PDF document text
    • http://zokepi.carlosalfredojr.com/uploads/1/3/1/0/131070152/xudafonatox.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/1/0429/9587/5989/files/42379998068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1085/7381/files/hellfire_compact.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7015/5680/files/fofamoraxofilove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8468/4706/files/how_to_describe_skin_color_without_being_offensive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9357/3288/files/kibevapijirize.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47cadda2-b9b1-4b9a-980c-acadc3bd3847/wuramowe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/510f7d84-4401-4616-b9d2-3e30ca523f95/jofurafesowe.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_off00005279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5279 5644 bytes
SHA-256: e99179449035a4312aadab98e1f939ba13b0789730e39bba971b64d98cbc0a8f
font_01_sfnt_off000065cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65CD 9812 bytes
SHA-256: afd76a5d2e56841943345fbe5323fddb12e5860982f8c918cd479536ba199ac2

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