Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbc525cdfe55fbe3…

MALICIOUS

PDF

55.2 KB Created: 2020-10-09 01:23:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: d558c7290d994761e616473495022e99 SHA-1: 1a5657d57290636dd2d3094e17bf27f50657df59 SHA-256: bbc525cdfe55fbe396bde2fc957e80907bb2248fcd7e305a67cab56d2f7d38ce
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://cctraff.ru/pify?keyword=nys+physician+profile+lookup In PDF document text
    • https://site-1039496.mozfiles.com/files/1039496/keditojusovufukepasewu.pdfIn PDF document text
    • https://site-1039381.mozfiles.com/files/1039381/20789591064.pdfIn PDF document text
    • https://site-1037022.mozfiles.com/files/1037022/32371016547.pdfIn PDF document text
    • https://site-1037121.mozfiles.com/files/1037121/61397460766.pdfIn PDF document text
    • https://site-1040100.mozfiles.com/files/1040100/vanonamojasoben.pdfIn PDF document text
    • http://files.imagequestent.com/uploads/1/3/1/3/131383953/5ef60e60abd87.pdfIn PDF document text
    • https://site-1039307.mozfiles.com/files/1039307/muvotitazalejefatoge.pdfIn PDF document text
    • https://site-1038707.mozfiles.com/files/1038707/43191922365.pdfIn PDF document text
    • https://site-1038455.mozfiles.com/files/1038455/49776460300.pdfIn PDF document text
    • https://site-1042658.mozfiles.com/files/1042658/19318406116.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/1/0481/7233/5255/files/bovekemezadezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1449/4614/files/snes_game_genie_codes_zelda_link_to_the_past.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/0957/9429/files/65013532240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/2040/2078/files/airhawk_seat_cushion_coupon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6211/1637/files/dd_4e_character_creation_guide.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009b90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B90 5240 bytes
SHA-256: 4355159e6a5e977960671a429d142497dfdfbfc55b48a1cbbc6c886dc1ea7e15
font_01_sfnt_off0000ad6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD6E 9980 bytes
SHA-256: 8f8b1030b7d8a0b3317a5d4b56b7d5c165ac3dde448638f61a957a9b7412dce6

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