Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8c099d63d1700d7…

MALICIOUS

PDF

90.5 KB Created: 2021-03-12 19:38:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 09ce4e133cbaf37433af8529567679d5 SHA-1: 4444896ca74a510dab8d161b3e785d7dbbd15a85 SHA-256: e8c099d63d1700d7c5da34fadfd8cd50741a26273177965afe1dec6d32fd4c0d
254 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs that point to redirector infrastructure, identified by heuristics like PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM. These redirectors likely lead to phishing pages or malware downloads. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest a phishing or download lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://dafemum.ru/wix?keyword=beyond+opinion+ravi+zacharias+pdf In PDF document text
    • https://fowowudajij.weebly.com/uploads/1/3/5/3/135312379/dawiketuda.pdfIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/arabinose_function_in_transformation.pdfIn PDF document text
    • https://walikuroxora.weebly.com/uploads/1/3/2/8/132815001/bb940fc7c2.pdfIn PDF document text
    • https://cdn.sqhk.co/nolovojawek/EbjaDhf/dash_questionnaire_reliability_and_validity.pdfIn PDF document text
    • https://tifimiwarefimi.weebly.com/uploads/1/3/4/8/134895051/6113438.pdfIn PDF document text
    • https://cdn.sqhk.co/xeloxilava/jeJ5jcj/zenomowijadimufoz.pdfIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/radiation_protection_in_medical_radiography_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/gegob.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/60640673035.pdfIn PDF document text
    • https://s3.amazonaws.com/fizufapu/the_other_side_of_midnight_film_wiki.pdfIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/ribaxuw.pdfIn PDF document text
    • https://cdn.sqhk.co/gupuwiwi/fQy6hf6/26420870563.pdfIn PDF document text
    • https://s3.amazonaws.com/bejeseja/14547832109.pdfIn PDF document text
    • https://josaboduzez.weebly.com/uploads/1/3/1/6/131637311/japej.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/63114105086.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/errterung_schreiben_beispiel.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a68e2ff5-bf17-48e3-82d4-ceb975b85758.filesusr.com/ugd/760101_3a958cfd20194e96b54bc0f9c7dcbbc3.pdf?index=trueIn PDF document text
    • https://36425c1f-c329-48aa-845d-1f8252cb45c8.filesusr.com/ugd/01d500_a4a5a749b521438582f56763c08f56fe.pdf?index=trueIn PDF document text
    • https://bad3f395-1638-4667-b349-d6f934eeab49.filesusr.com/ugd/ed2d23_5105ca0bf2ee4d0fbaf91fecaacdcd11.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/af1a388f-17af-4246-b61e-2f8fcd05d17c/varig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/189d9646-94a6-48ca-a117-4460aa27cdd9/the_giver_questions_chapter_21-23.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6547949-1962-418c-b173-c161ac292f5a/the_language_of_composition_chapter_1.pdfIn PDF document text
    • https://98e80eac-0673-4bf9-a3de-4132461903b3.filesusr.com/ugd/1acd69_0e667f73f46d49d1a46d623c9ddcebf6.pdf?index=trueIn PDF document text
    • https://51956041-da35-40aa-96c1-085c1f47c80d.filesusr.com/ugd/e6e573_5b8ae63a1e494e17afb49628a4c1ba8f.pdf?index=trueIn 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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001112a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1112A 6744 bytes
SHA-256: 127b44c9f93874c96d25eb7ddc4688780d8877ce931cf296363fb5748d8d514b
font_01_sfnt_off00012211.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12211 5472 bytes
SHA-256: 37d55f02e8a8ec4df257b4c42715946dcd787ee0f962a1c890f3b9cf2c127944
font_02_sfnt_off000134c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134C6 10920 bytes
SHA-256: ff752c8dfc349314717521350c8bfad19b47d1559d48b53bd45c5f0d84454ba7