Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cda622a008131d3…

MALICIOUS

PDF

52.6 KB Created: 2020-10-12 00:31:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: d32766f4da70eba5efaddbfbd501c3ee SHA-1: ad24a3c713188e60e6e92086d7ea74e666b58642 SHA-256: 3cda622a008131d3c1304a31c0617ef0627bc6d27bf6b9379619309f241e956b
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=owl+eyes+great+gatsby+chapter+9 In PDF document text
    • http://files.daragraphic.com/uploads/1/3/1/8/131872239/1916701.pdfIn PDF document text
    • http://zadaxe.abetterwaybeef.com/uploads/1/3/1/4/131453850/lebogibikeloxajuvuka.pdfIn PDF document text
    • http://files.tipperclan.com/uploads/1/3/0/7/130775825/fidebixemawuz.pdfIn PDF document text
    • http://files.brightlikeblack.com/uploads/1/3/2/8/132813998/d182ff1da59.pdfIn PDF document text
    • http://files.snawdersmarauders.com/uploads/1/3/1/4/131406592/19a91aacf95.pdfIn PDF document text
    • http://files.zentaiart.com/uploads/1/3/1/0/131070173/danefuw.pdfIn PDF document text
    • http://bozokama.framedbytheword.com/uploads/1/3/0/9/130969060/5916196.pdfIn PDF document text
    • http://tugabilem.ppjass.org/uploads/1/3/1/4/131454165/7951611.pdfIn PDF document text
    • http://files.historicsaranaclake.org/uploads/1/3/0/9/130969278/fesumazi_duragoxomubumu_zanunevufikevi.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/1/0482/9878/6971/files/16469091526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3993/2067/files/8506546454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1256/2849/files/the_old_willis_place_summary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5924/8797/files/tubemate_apk_android_download_free.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_off000089cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89CF 5712 bytes
SHA-256: c2e07818216b8ca18084dd464cdaefce1b00f202b3343d140c739470068e9fc1
font_01_sfnt_off00009d46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D46 12420 bytes
SHA-256: b3c8199354419d89eaf469ef57791fe2231a15c70b0c27c6a10754ea49e17bbf