Malicious PDF — malware analysis report

Static analysis result for SHA-256 d08316aef5b9ab94…

MALICIOUS

PDF

44.7 KB Created: 2020-11-02 10:36:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 1d4a9440f0513bb28fe52796724ab444 SHA-1: 66399b4bf5cbca928815f6c285dd2436758e5c3d SHA-256: d08316aef5b9ab946eafb4a159cebe01e694f91a3aea632b98c69ce4b1212246
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.me/123?keyword=homopolar+motor+science+project+hypothesis In PDF document text
    • https://xubuvene.weebly.com/uploads/1/3/1/3/131380433/865368d66db3.pdfIn PDF document text
    • https://pumizisumene.weebly.com/uploads/1/3/4/0/134017803/777be.pdfIn PDF document text
    • https://wupuvogobed.weebly.com/uploads/1/3/4/5/134507139/8572874.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379045/normal_5f8ca8b2256ff.pdfIn PDF document text
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/1258976.pdfIn PDF document text
    • https://solusolifodijal.weebly.com/uploads/1/3/4/4/134433047/107204d9d3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/lic_jeevan_amar_plan_855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/8551/0820/files/xazaguwigef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/4238/8145/files/design_your_life_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0506/3914/3062/files/9855267041.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3698/9850/files/ipad_air_1_apple_tablet_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006383.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6383 5100 bytes
SHA-256: f233b568c64061bd859f6740c0c056c680c73fd2db54493124e4899a2221973a
font_01_sfnt_off000074a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74A4 10364 bytes
SHA-256: 830c70f097550e0f200b0782c92dc6c068acf4b13b3a0eda4a2573c89cc2cddd
font_02_sfnt_off0000979b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x979B 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230