Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd9f8d30923690ca…

MALICIOUS

PDF

70.9 KB Created: 2021-02-28 17:26:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a2be4bb5c73a47ed60e96dd6ceef333f SHA-1: 078e4864fc2d8ffa74425bf7ffedc6d3a776559f SHA-256: fd9f8d30923690ca6fda21266501db80301a291dab3c62261c7903a278736129
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://jottigo.ru/wix?keyword=argent+hippogryph+guide PDF link annotation
    • https://siromalad.weebly.com/uploads/1/3/5/3/135312661/zefunilumupan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377717/normal_5fe92cec3d1e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425908/normal_600d515ca67ea.pdfIn PDF document text
    • http://tehnotop.space/join_files_side_by_sideb9syb.pdfIn PDF document text
    • https://tanuroxej.weebly.com/uploads/1/3/4/1/134131309/8327108.pdfIn PDF document text
    • http://jodazok.22web.org/astrill_ios_apk.pdfIn PDF document text
    • http://kieverts.xyz/jimegepebujapokosasijqwr7c.pdfIn PDF document text
    • http://outputqwvk.space/jukazeah6i.pdfIn PDF document text
    • http://bestsaleshopin.xyz/game_asphalt_8_mod_apk_2019b6sa2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466161/normal_6038e541cbca4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jijumupade/9931916997.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/asia_physical_map.pdfIn PDF document text
    • https://s3.amazonaws.com/pevarijidasalop/90971574469.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/pumawowajo.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/blade_trinity_full_movie_in_english.pdfIn PDF document text
    • http://wetovokerug.epizy.com/3028910397.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_off0000d9bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9BC 4892 bytes
SHA-256: d5d094d249f1c1a75cc012dad1d7daec1b1830b1da57c6c7487039087516a780
font_01_sfnt_off0000ea69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA69 10680 bytes
SHA-256: 0ae744098460feae6b46daa5d6cee96c98a86a213548a081a0188cdf0fdff6ec