Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae664d0ba0ed4b90…

MALICIOUS

PDF

79.3 KB Created: 2020-12-07 00:25:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 32fd739cef8b15a680fa76ee9aa9f70c SHA-1: 919b8e340ae7f0e680fc63c8f0dfd96258d68d2f SHA-256: ae664d0ba0ed4b900e859a102af87f260506d030d14019d8875b3b0728658215
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://traffking.ru/123?utm_term=paw+paw+seeds+nutritional+value PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4444114/normal_5fbc3e828a0a7.pdfIn PDF document text
    • https://bonujuvab.weebly.com/uploads/1/3/2/7/132740321/309ec3.pdfIn PDF document text
    • https://seririgikum.weebly.com/uploads/1/3/0/7/130739922/2853653.pdfIn PDF document text
    • https://lokenomosotim.weebly.com/uploads/1/3/4/4/134499182/e0d2092114b.pdfIn PDF document text
    • https://gunobodupisar.weebly.com/uploads/1/3/4/6/134677737/fd6670c.pdfIn PDF document text
    • https://juzowugaf.weebly.com/uploads/1/3/4/7/134773334/zesedulukidexumigaxo.pdfIn PDF document text
    • https://gunowiwusofemu.weebly.com/uploads/1/3/4/7/134705227/popofebuke_mimesitabojo_vomimafinub_siferesijabub.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://static1.squarespace.com/static/5fc0e0c67848ba205d186e02/t/5fc2cfd4f81c9a2a0cff547e/1606602708687/word_whizzle_recipe_procedures_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc15a3c60f2895dc1eafeb7/t/5fc3aa427acac6192a306ded/1606658630288/pericardial_disease_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/xiaomi_aggiornamenti_android_10.pdfIn PDF document text
    • https://s3.amazonaws.com/befafuni/wonubexerojuwoses.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d7dc3dfdd95b60d4c91c/t/5fc137d9bc819f1cf4046a32/1606498266014/chowder_and_panini_fanfiction.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc129dd17e7202640ebdc1b/t/5fc568f0145a8629dc67bbd0/1606772987747/otra_vez_meaning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2fe685b-047d-4ab8-aa54-11306a2e43fb/nozijiwikinejadizoparurut.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2fb60c30a162e0c601609/t/5fc3bccd3570fb44d175312b/1606663374323/bolife.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cff1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFF1 5108 bytes
SHA-256: 6711fac4ac44a22cf6f1348b5d853e51d3489a84234b1774e8ced03949f36926
font_01_sfnt_off0000e16e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE16E 3604 bytes
SHA-256: 8a1081bbe1dcd4f393571012a4d24be4bd44d144fe33b432f25ac3944d41ca5f
font_02_sfnt_off0000ee5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE5A 4888 bytes
SHA-256: 3d9d0283516b0083239559da8f8512c055ba92deb104fe5a7b527c1350625c77
font_03_sfnt_off0000fe3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE3C 10044 bytes
SHA-256: 9d7e5dec05f8616f40d96dd98ca3c5df94f6284af5210f51be4d253f43c69358
font_04_sfnt_off000120f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120F3 3108 bytes
SHA-256: 072768eeb94daa8fd6eb27cdf50851936ddbfc54e56420fbeda70b1be80237de

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