Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1605675656299a3…

MALICIOUS

PDF

34.6 KB Created: 2020-08-25 19:16:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9e0fdc454d4e7e7cf3c5a79e760bb618 SHA-1: 2411a6587abeb93056b3559380cfb93db9ee54c6 SHA-256: d1605675656299a3de4ecb9885475793c65541048a57705ea761178d0053a5df
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.club/pify?keyword=chaitanya+charitamrita+in+hindi+pdf In PDF document text
    • http://pizob.mrbaskwill.com/uploads/1/3/1/4/131407558/e86df399f5df.pdfIn PDF document text
    • http://sobazunif.customfabricatingsolutions.com/uploads/1/3/0/9/130969723/3037273.pdfIn PDF document text
    • http://files.imagecode.org/uploads/1/3/1/4/131453133/14f35acb0.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/1/0428/1538/9855/files/veziverufadifofof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75555741983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8030/2240/files/35371283188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8489/0790/files/zejomixamubavotaxuge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0531/2156/files/trastornos_equilibrio_acido_base.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7303/4657/files/grammarian_report_script.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/2182/2120/files/adobe_audition_cs6_tutorial_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6617/1287/files/5764328097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/3564/4319/files/programming_arduino_next_steps_simon_monk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6119/9526/files/76227218948.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_off00004919.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4919 5192 bytes
SHA-256: 0f16df6e501c9b5de6334d18ad101e61a0510fd0573df3bdf2e364d9428ecf01
font_01_sfnt_off00005a9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A9A 10280 bytes
SHA-256: b80dfa53c2c1283fbe917e881b58c0a1a8d217d2bf5b44e4304fe202f7cb8c1f