Malicious PDF — malware analysis report

Static analysis result for SHA-256 c75a47fe090372da…

MALICIOUS

PDF

64.5 KB Created: 2020-11-18 23:35:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: c4b073386c795e49ab31c0a09b9609c9 SHA-1: c3d14dd34a4930bcb69c015d906d1365ee91f3d5 SHA-256: c75a47fe090372dad3ecde1e968270bab0653682afed74a5d360851241880ece
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://gettraff.ru/123?utm_term=layers+of+soil+worksheets+for+grade+3 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366005/normal_5f88b1f339155.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378620/normal_5f9a8ba49e351.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/tadovu/mendeley_desktop_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/2333606730.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/subnautica_strategy_guide_book.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/all_quiet_on_the_western_front_bangla.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/rodeo_stampede_mod_apk_download.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/dylans_unblocked_games_zombie_apocalypse.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/92376349637.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/singer_futura_ce_250_embroidery_software.pdfIn PDF document text
    • https://s3.amazonaws.com/divelikubapiwaj/battery_testing_walmart.pdfIn PDF document text
    • https://s3.amazonaws.com/kubafezin/66876234682.pdfIn PDF document text
    • https://s3.amazonaws.com/rurosaveruk/wijewurugu.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/ccna_200-_301_book.pdfIn PDF document text
    • https://s3.amazonaws.com/xesigeze/yellow_medicine_county_jail_roster.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_off0000c01f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC01F 5532 bytes
SHA-256: 43aeaaf96164bcdfd1baf448ebeab663665a821d331ddbdf861f6762e5a86db5
font_01_sfnt_off0000d30d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD30D 9984 bytes
SHA-256: b248ddba49ca007bce6768896bf3917f378838ac386a8aaa00fe019ad84b0b5f