Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc3def91eec3b31…

MALICIOUS

PDF

55.3 KB Created: 2020-10-02 05:45:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-30
MD5: dd61e92e1fe9fd3f0f90ce52c7984278 SHA-1: 8c617389313ba9ca8fe76486e468892614fd12f2 SHA-256: 1dc3def91eec3b3174c7b97c210ce27ab08bef6586fb05e735a5b37afc12a9c7
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://ggtraff.ru/strik?keyword=the+official+sat+study+guide+2018+edition+pdf+answer+key In PDF document text
    • https://site-1038572.mozfiles.com/files/1038572/18462542953.pdfIn PDF document text
    • https://site-1036713.mozfiles.com/files/1036713/15929785827.pdfIn PDF document text
    • https://site-1037018.mozfiles.com/files/1037018/51473240888.pdfIn PDF document text
    • https://site-1037071.mozfiles.com/files/1037071/17227037435.pdfIn PDF document text
    • https://site-1040001.mozfiles.com/files/1040001/sukedokevivezinekexetar.pdfIn PDF document text
    • https://site-1038402.mozfiles.com/files/1038402/gozeputuvaferulenara.pdfIn PDF document text
    • https://site-1036985.mozfiles.com/files/1036985/pajazofokigopobowegabufaj.pdfIn PDF document text
    • https://site-1037178.mozfiles.com/files/1037178/44830231394.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/1/0478/8738/4742/files/final_fantasy_14_flash.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4514/3206/files/totidavaxunibaponen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9479/3635/files/sizemudozaduzizigodeloso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0042/1790/files/mujezasejesigesiwezozaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/3185/6805/files/27898667682.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3198/5309/files/nintendo_switch_user_manual_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6153/8727/files/most_realistic_game_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6671/0429/files/cuisinart_em-1000_espresso_machine.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_off00007480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7480 6144 bytes
SHA-256: a334c457daf71a158e1a5ec9392392c4372957ddd76ddb54eef9189b1b21f28e
font_01_sfnt_off00008988.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8988 15120 bytes
SHA-256: 42969f38f7705a7e8b4ebcd53b5564526c331ea1b587a42a984ff74fb55013d8
font_02_sfnt_off0000b85d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB85D 16092 bytes
SHA-256: c9557d91917e40dbb2ce09b7ef560a04a9a832ffe2ebcac6b50408a58351272e

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