Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb9dd07441dc70c9…

MALICIOUS

PDF

98.7 KB Created: 2020-12-21 22:37:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d2b0d5c3fd94eb922654126528f256d4 SHA-1: 53925cd3cc99191309d3972b4c5a22acc49f87b0 SHA-256: eb9dd07441dc70c96ccad49a6dd88dd6e8aced8e1ef9e0546c04fbaa7768c352
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple embedded links, with at least one pointing to known malicious redirector infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. The presence of numerous external PDF links suggests a link farm or SEO manipulation tactic to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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.
  • 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.
  • 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://ggtraff.ru/aws?utm_term=electrolyte+imbalance+ppt+template In PDF document text
    • https://xovatikawe.weebly.com/uploads/1/3/4/7/134726086/musutixitavik_ganiwe_kanuraza.pdfIn PDF document text
    • https://zoladikadaxupaj.weebly.com/uploads/1/3/4/6/134635808/xarapaja.pdfIn PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/3040947.pdfIn PDF document text
    • https://pareruli.weebly.com/uploads/1/3/4/8/134891857/da51a21a7382d46.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static1.squarespace.com/static/5fde7bb6c954b227390fcd8a/t/5fdf0907a478394ebcaf4208/1608452359704/73824972089.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd53b4d610986319753e28/t/5fddf14651a86c1b6c1573bf/1608380743115/dikemofakesovikebiviwud.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf46908845d09244f92be/1606284393887/mens_zombie_priest_costume.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce4fa390e5b06becb65dca/t/5fd73c5b7fc52c2069400165/1607941212463/ignou_bcom_solved_assignment_free_2018-_19.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc377939955c744b54bcd16/t/5fcb585e393ce4735631d320/1607161951030/cake_recipes_without_oven_malayalam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/393f5ed4-f9d6-4d25-a294-75cfb2fc7bbd/porn_on_oculus_go.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000119dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119DC 1684 bytes
SHA-256: 4d3fb6748bdbfc0676bbc246a341b567ec3707c335db72ae26270b639488ab50
font_01_sfnt_off00012240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12240 4888 bytes
SHA-256: da67b2740ad79bf4b4dc54d0af4f25ad4bb52d9b177f5f357b67119a51539d15
font_02_sfnt_off000132be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132BE 11008 bytes
SHA-256: 60ec7c4d3c6dc455566b9d1dfe01e6661fa19ccecc272aaa8902f6c50531c440
font_03_sfnt_off0001587f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1587F 16552 bytes
SHA-256: a5781ebf6d70388fcdd3ed645c677efd35a5c9b5c9712c7b80031d599adb3c7a
font_04_sfnt_off00016f47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16F47 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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