Malicious PDF — malware analysis report

Static analysis result for SHA-256 6db317386bd5498e…

MALICIOUS

PDF

46.1 KB Created: 2020-11-02 19:54:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 714abbdbe78892c0eb64150bfef19acc SHA-1: 937de06df82e2759be85d6292e5bb3b9b6462887 SHA-256: 6db317386bd5498ebc1a65fa6bbb67b7ee73b239e1f19afdb9b2ea050be11d83
174 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file is identified as malicious due to its structure, which includes an image-only lure and a critical heuristic firing for malicious redirector links. The document body contains a URL that appears to be part of a SEO link farm, designed to attract traffic and potentially lead users to malicious content. The primary malicious URL identified is ttraff.com, which is flagged as a redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 46 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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.com/123?keyword=watch+boruto+episode+36+english+dubbed In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365613/normal_5f9447c6e6cbb.pdfIn PDF document text
    • https://wejakoguxi.weebly.com/uploads/1/3/4/3/134324676/sozubu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366357/normal_5f947e35e93e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383467/normal_5f8cfe791d66a.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/mobaso.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/1/0436/4104/5145/files/pukazuni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/6715/4847/files/40765991237.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/chemistry_book_in_hindi_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/bukiwuzaputiludedovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/7384/5433/files/the_hustle_123movies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5764/2152/files/allen_major_test_series_2020_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7831/4903/files/23857157664.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_off00007b8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B8F 5808 bytes
SHA-256: 467e9904a3c519a79a26b105123dae3416c724e31f2de467a53d6b19ff371147
font_01_sfnt_off00008f4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F4A 8084 bytes
SHA-256: d62906247bcc9f9cba880a6facdfe0adbe1a6e44b77bfbc489ba4bef985254a1

Open this report in the interactive analyzer, or submit your own file for analysis.