Malicious PDF — malware analysis report

Static analysis result for SHA-256 8eb54ab8e90d4e57…

MALICIOUS

PDF

37.7 KB Created: 2020-10-26 19:38:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: bb98823e06e641b9c818a91c8188a230 SHA-1: dedb884dd9857784cf066022ea724b3ae54a32f3 SHA-256: 8eb54ab8e90d4e57983b6bd903ed8a08af90904544023ba683e6582e9e4bdfb8
94 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 an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://ttraff.link/123?keyword=icivics+the+constitutional+convention+answers In PDF document text
    • https://junoxavod.weebly.com/uploads/1/3/1/3/131384771/d40d16.pdfIn PDF document text
    • https://sepikupi.weebly.com/uploads/1/3/0/7/130738949/vevawuvi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415291/normal_5f957d24b09c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368485/normal_5f8db74260c87.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2772/5995/files/reduire_taille_fichier_ipad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2044/3045/files/bamij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/9230/1718/files/quaker_oats_oatmeal_cooking_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/923c5456-8128-451d-ba53-3271199554f5/Dr_michael_cutler_quack.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20779627-56ed-4f0e-9004-553a69fec7bb/mopejokido.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2668a4fc-2f1a-479b-9681-5f85bdbca5ab/xutatulepudamave.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68d191f7-f2fb-4766-bc1b-a3de56961034/programming_principles_and_practice_using_c_2nd_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/7888/4759/files/y2mate_mp3_download_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2314/6906/files/pojuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7522/1144/files/zimemefupopoxaruzalaremap.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/principles_of_genetics_book_download.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/27624389542.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/9762570235.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/wikorunedetivovopipuf.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005781.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5781 4976 bytes
SHA-256: 069ef6bc217f5f856c2f7bb6b397cc44714f53ace3db316a25722c6d011a0edc
font_01_sfnt_off00006875.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6875 9900 bytes
SHA-256: e9be577f5443bea4d34dc06b7cab2323a6251cfa4fdc0a61978a3e3b0140927d

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