Malicious PDF — malware analysis report

Static analysis result for SHA-256 478ccfeb40e1b826…

MALICIOUS

PDF

73.8 KB Created: 2020-11-23 19:47:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-20
MD5: 56d32baf051462b1af68ae3167f13e4c SHA-1: e542a0ba8b247e70a2590f97bf2ed4afdf3efcb4 SHA-256: 478ccfeb40e1b826b2f2c990613f9bee4e030b70652aa6832591a97d7a098793
196 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
  • 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://traffset.ru/wb?keyword=mcgraw%20hill%20answer%20key%20managerial%20accounting PDF link annotation
    • https://xobowosesij.weebly.com/uploads/1/3/4/6/134616182/tekapolij-gigifis-zemuvofe-wukixogidevet.pdfIn PDF document text
    • https://manoxumumaxu.weebly.com/uploads/1/3/4/4/134472756/09178edd45a5c7.pdfIn PDF document text
    • https://fupesovuzej.weebly.com/uploads/1/3/4/0/134016868/sebaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408460/normal_5f9cc9fda785f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368471/normal_5f87718fe857e.pdfIn PDF document text
    • https://nekizinatuzi.weebly.com/uploads/1/3/4/3/134325328/rubavitevuna_wuzove_jobamuwavajok_rikunigo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366652/normal_5fae49b8e8524.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369493/normal_5fb83a482b5d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417408/normal_5fa702b819abb.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/ravuxudibure/the_complete_costume_history_taschen.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/grammar_and_punctuation_grade_4.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/ali_baba_40_chor_movie_dharmendra.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8c6bd60-95f4-4683-aa48-d6b1bcd717f9/44367702020.pdfIn PDF document text
    • https://s3.amazonaws.com/xatojem/download_mixcraft_8_free_full_version.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_off0000c8ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8AC 5476 bytes
SHA-256: e8634906b002c028ad5d1a8a0bad4ca9f821cc9623ecd423f5cbb03395898a4a
font_01_sfnt_off0000db4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB4A 12900 bytes
SHA-256: 4d669fd2ff63fb4bd6085ee9e962416d7c1dde6c675382ac9f73e428b05263d8
font_02_sfnt_off00010515.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10515 16060 bytes
SHA-256: d1a84ba8f0e4a827a048d387db8dd5dae3538f1c7e72415b16af587a9947cdc7

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