Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1296f4be0a193d0…

MALICIOUS

PDF

41.3 KB Created: 2020-10-04 14:16:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 91726a6025db29337cf5ae68643b549e SHA-1: 599f626329841869695beaed781c868f2c2228a1 SHA-256: e1296f4be0a193d065601bbc248999620afb248d1aa154596a05acd9336ace3b
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/strik?keyword=irregular+adjectives+exercises+pdf In PDF document text
    • http://subudinak.lifeadaringadventure.com/uploads/1/3/1/4/131437462/sorabu.pdfIn PDF document text
    • http://files.cathyseversonart.com/uploads/1/3/2/7/132712332/jipetumejarota.pdfIn PDF document text
    • http://files.highperformancecbt.com/uploads/1/3/2/6/132681144/gazured.pdfIn PDF document text
    • http://giwedod.laocdb.com/uploads/1/3/1/4/131482916/jagewomum.pdfIn PDF document text
    • http://wumawiz.yvcjoplin.org/uploads/1/3/1/8/131857284/cad413decb62d.pdfIn PDF document text
    • http://files.gleimlight.com/uploads/1/3/1/4/131406811/nimajogadopen_guxogatazoxowem.pdfIn PDF document text
    • http://files.ccmelville.com/uploads/1/3/2/6/132695829/viwowadijipojo_norasa.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/1/0433/2158/9913/files/great_wolf_lodge_niagara_falls_ny.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6032/8608/files/76377652873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2131/9839/files/algebra_1a_3-5_compound_inequalities_worksheet_2_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9217/1165/files/old_mr_boston_bartenders_guide_value.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9050/2042/files/81437394184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9232/0161/files/durijakidabavunovez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9643/5607/files/80883284920.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7239/6193/files/kepogokemevolufugarog.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C40 5464 bytes
SHA-256: ab091a3be12ce192b0c2ecc7bde3c376428626015efaef75bf3394d22603bf57
font_01_sfnt_off00005efa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFA 10092 bytes
SHA-256: e6fba905e25ccf2928f0bcebc942d600acb64bd733011518751ee322f296855f
font_02_sfnt_off000081a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81A7 16060 bytes
SHA-256: bb4620ae2308066493f479cb0495314a41e91f5b0bfb2a754d9bad2ef34af03d

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