Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e15ab4b91475281…

MALICIOUS

PDF

47.1 KB Created: 2020-10-08 08:32:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-09
MD5: a5e5bf346240f53ea69738a57e588fd7 SHA-1: 1adfa8bd12c066f532897b3bac7b9b9b5ba5da1a SHA-256: 5e15ab4b91475281de62f1f549e83f0bdddcc60d106f48825771714d0fd46e03
289 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 8

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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://gettraff.ru/strik?keyword=algoritmo+abn+pdf In PDF document text
    • https://site-1039494.mozfiles.com/files/1039494/jilozebefokuxo.pdfIn PDF document text
    • https://site-1048178.mozfiles.com/files/1048178/44139861988.pdfIn PDF document text
    • https://site-1036881.mozfiles.com/files/1036881/9938359224.pdfIn PDF document text
    • https://site-1036960.mozfiles.com/files/1036960/jarufukelozuwo.pdfIn PDF document text
    • https://site-1048178.mozfiles.com/files/1048178/gorupijevefifixa.pdfIn PDF document text
    • https://site-1039330.mozfiles.com/files/1039330/suzikusaxekexari.pdfIn PDF document text
    • https://site-1038916.mozfiles.com/files/1038916/nukobomul.pdfIn PDF document text
    • http://wabixes.calumetcityhistoricalsociety.org/uploads/1/3/1/6/131607022/c74f8320252d.pdfIn PDF document text
    • http://files.p2s2society.com/uploads/1/3/2/6/132695620/b88168b.pdfIn PDF document text
    • http://files.multiculturalassociationsussex.com/uploads/1/3/0/7/130738531/jogokukagej.pdfIn PDF document text
    • http://files.mendocinosportsclub.com/uploads/1/3/2/8/132815924/89985.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006c04.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006c04.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000a085.bin)
    • https://cdn.shopify.com/s/files/1/0482/7902/7867/files/lap_manual_fdot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3401/2579/files/sowel.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 extracted file (font_00_sfnt_off00006c04.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C04 4984 bytes
SHA-256: 854a907c61e9afa8d7a0bc64d3049db0d6c86015835a552bedcaeea2aad419c1
font_01_sfnt_off00007cc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC6 10464 bytes
SHA-256: 3f8fb19d07c4dcf2e708ad0d618a1928e7101be4eebed0d43bc6d0de3337fe76
font_02_sfnt_off0000a085.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA085 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333