Malicious PDF — malware analysis report

Static analysis result for SHA-256 2011df513429541f…

MALICIOUS

PDF

45.2 KB Created: 2020-10-29 18:43:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c2c31fb84717ddf6be2626005250f78a SHA-1: 985543a537101aef688a11dcacf779e7f9ad2d2c SHA-256: 2011df513429541ff6b6b59fd6cbbf295efccbc823b69c405cd8c37052fb0e64
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link and a link farm, indicating a phishing or scam attempt. The embedded URL, 'https://ttraff.link/123?keyword=car+window+decal+application+instructions', is a primary indicator of this malicious activity. The document body, though heavily obfuscated, contains this URL, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://ttraff.link/123?keyword=car+window+decal+application+instructions In PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/bilasesuve-kifubenoxa-kovefow.pdfIn PDF document text
    • https://tivexafo.weebly.com/uploads/1/3/4/3/134348633/figines_vebaf.pdfIn PDF document text
    • https://lukozosa.weebly.com/uploads/1/3/4/4/134485969/90df102913.pdfIn PDF document text
    • https://nurirekesuvakip.weebly.com/uploads/1/3/4/4/134404885/melepew.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/49d68727-87d7-4473-b04f-b5181af448e0/fexaguxa.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/gixedajiketa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0003/7027/files/tapisarikevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7362/6810/files/munoninazazam.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/xijepobik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2527b260-c4c8-4a0c-8b91-342f164a8c16/muxazutapediwit.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/no7_stay_perfect_foundation_shades.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/mufotunixag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9150/0452/files/71951544790.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_off000070cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70CC 5064 bytes
SHA-256: 6391867c5519b22f859dc0e9c115f966ab1a00848bf2ce4f8d9825d7a8a4cc52
font_01_sfnt_off00008222.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8222 11008 bytes
SHA-256: c208b06341127ecc6868fd00dbad34f4feadd23fa190fa94725ef1a735398409

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