Malicious PDF — malware analysis report

Static analysis result for SHA-256 149c953bcfb6d39e…

MALICIOUS

PDF

41.1 KB Created: 2020-10-29 14:52:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: f82665a28ec6b304d78d8ae07fa6fa04 SHA-1: 913e95daf8bfec7694c5fa4d5e139d0fb5fa5abb SHA-256: 149c953bcfb6d39e2e7b12fc465704f04af29ab26a2a74037c6a85a698b3d9c6
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=new+relationship+energy+duration In PDF document text
    • https://taxufizewafodo.weebly.com/uploads/1/3/4/4/134477277/bba27e404f66f46.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/1/0268/8375/2128/files/87333988501.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/optex_bx80nr.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3114/1783/files/house_of_marley_speakers_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/29708567423.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/hospital_and_clinical_pharmacy_book_download.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/vevirufewotom.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/behringer_xenyx_1002fx_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f092a48-309d-436e-b149-9f9ca14a1b75/la_familia_linguistica_indoeuropea.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/eye_glasses_repair_kit_amazon.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/pediatric_advanced_life_support_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5265/2951/files/take_me_there_anna_golden_chords.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_off00006338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6338 5384 bytes
SHA-256: f4cb752909eaa6925dc932916bc9b8820120576e1abbe5bfcad5d91c89b01e9c
font_01_sfnt_off0000759a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x759A 10068 bytes
SHA-256: 215bec1d5d57952e947403e3fabd06f59f3ea7a423ae0a23f6b0bbc1823f0899