Malicious PDF — malware analysis report

Static analysis result for SHA-256 191487df00416d30…

MALICIOUS

PDF

65.7 KB Created: 2020-12-22 14:08:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-22
MD5: b3167ddc99532d1993c4c108f1447f52 SHA-1: e068292b2873660a26e542cc1fe451d96402fad0 SHA-256: 191487df00416d30bf63f86a87ba0209cc057b633e9f9fff2ecf1123c8eb3329
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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/wb?keyword=funny%20memes%20stickers%202020%20wastickerapps In PDF document text
    • https://fofoxugijajeb.weebly.com/uploads/1/3/4/7/134729320/4412533.pdfIn PDF document text
    • https://walijogopabo.weebly.com/uploads/1/3/0/7/130776167/f49fafc.pdfIn PDF document text
    • https://fipowawebes.weebly.com/uploads/1/3/4/6/134601566/c8fc79de.pdfIn PDF document text
    • https://zunelejodimoje.weebly.com/uploads/1/3/4/5/134526095/353446.pdfIn PDF document text
    • https://latijazaw.weebly.com/uploads/1/3/4/3/134312978/a16617a.pdfIn PDF document text
    • https://dizegixevovule.weebly.com/uploads/1/3/4/5/134576191/8332646.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/juvuraguvutoxif/galactic_civilizations_2_races_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/beginners_guide_to_bass_fishing.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/15591434443.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/cardiac_cycle_file.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d311277c-befc-4c21-bd4d-0e47910f3ff6/working_conditions_for_a_field_slaves_living.pdfIn PDF document text
    • https://s3.amazonaws.com/legapatatezisa/ikea_twin_platform_bed_with_drawers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44fc7697-c2f1-45d7-a0bf-da94fe1d9bbe/rocketeer_helmet_pepakura.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aef3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEF3 5532 bytes
SHA-256: 29012ec220142ba0f74fae88bd1ee172ccbd582d0472d920442e9493bb6f6751
font_01_sfnt_off0000c1cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1CC 9728 bytes
SHA-256: d64d1d7856655da953654d27b43c0b486c8ddb0597f999de235a521e4925ba8e
font_02_sfnt_off0000e314.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE314 16544 bytes
SHA-256: c64f975c7c74378765a15e192890ba001b575443647995d4109c17b56814fb1e

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