Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f13db50b63e84cf…

MALICIOUS

PDF

57.0 KB Created: 2020-10-23 04:15:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: c7d18123eec617185ee7830bb225f1ca SHA-1: e4797929932b351c4d3ae69bc36f2c16370bd714 SHA-256: 7f13db50b63e84cff1fc7391c9463e5abfc020245c4530fdcd9758ea23c3aa05
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/pify?keyword=d%25C3%25A9finition+des+politiques+publiques+pdf In PDF document text
    • https://kikuvabafot.weebly.com/uploads/1/3/4/3/134332304/pupuzoka.pdfIn PDF document text
    • https://zisokilusativ.weebly.com/uploads/1/3/2/3/132303079/4843020.pdfIn PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/tizobajevi-dopebulixoni-javomumarilit-roruripofexede.pdfIn PDF document text
    • https://gogebuzavoriro.weebly.com/uploads/1/3/2/6/132681212/9400731.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/kekikefuwu.pdfIn PDF document text
    • https://disaxugotusineg.weebly.com/uploads/1/3/1/8/131871710/jometijabadojur-repabod-dafijowususol-rifabiwo.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/1d1f8ecc085ca.pdfIn PDF document text
    • https://sirawomaperuli.weebly.com/uploads/1/3/1/3/131398091/9887843.pdfIn PDF document text
    • https://ruwopevod.weebly.com/uploads/1/3/1/3/131397973/fosiri-vasulex.pdfIn PDF document text
    • https://fotejisatowonu.weebly.com/uploads/1/3/2/3/132302873/da1c46cb5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366331/normal_5f92159aae28b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383304/normal_5f8e2847642ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375521/normal_5f8b67b6c47de.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/1/0430/4335/6821/files/family_worksheets_british_council.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/9135/4534/files/65499678659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6127/8870/files/rpf_constable_syllabus_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/5451/7410/files/9714523396.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7201/1932/files/besolijukabikerijedaro.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/ejercicios_de_sufijos_diminutivos_y_aumentativos_4_primaria.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/daratumumab_bortezomib_and_dexamethasone_for_multiple_myeloma.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/bhagavad_gita_chapter_12_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/popoximebap.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/bonuvifo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fa47b4f-7c4e-4916-b205-573f729e2e5b/vamej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f78ff02-cb0f-4483-a059-e6b2b8278911/45016985703.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc49b011-9f19-4d4a-9b6b-6b0228206a7f/8077574777.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8dd2ca55-2675-4be8-8c12-83320e608e68/44788134072.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92f177ea-ac84-41c0-9c83-29e1add29338/zidugupuxozawum.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_off00009313.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9313 5136 bytes
SHA-256: 57354d338c1def2567913750a7bb1a70368e81993a5630c619ec1899d664c40d
font_01_sfnt_off0000a459.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA459 15592 bytes
SHA-256: ec6e7b991090e51c52b6f3d1d25d1e0eabc67c9561bcfbdefe62a2d9ab3cd472