Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff7e11de4215fc6e…

MALICIOUS

PDF

51.5 KB Created: 2020-11-02 22:09:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 5420a619849c192b058c7d0590270ec4 SHA-1: 4c24b8f061065999a8a62f0250765e31210d5368 SHA-256: ff7e11de4215fc6eeff707cf56b60ecf0e593873e8abcd0ec316da68a6f099f2
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is likely intended to deliver a secondary payload or phish for credentials. The document body, though heavily obfuscated, contains the same URL, reinforcing its malicious intent. The ML classifier also strongly indicated maliciousness.

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://gettraff.ru/aws?keyword=penn+plax+cascade+700+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4382789/normal_5f9150e568eec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368996/normal_5f89e2500410f.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/1/0506/8832/7858/files/tri_tronics_classic_70_old.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fedf924-4c2b-4179-96f2-979dd7effb87/dawugivemukonaror.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3a75925-3d1d-4375-8358-cb1e16abdcb3/80253565108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7628/1021/files/94640467733.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/30265951062.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef180a6d-e988-4bb7-90ac-9ea5a8eaab4b/89742968801.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6342/7751/files/61170503446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0473/8672/2473/files/vawiki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5374/2745/files/48718098968.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2D 9660 bytes
SHA-256: fd6ca5afa6eebb7b8e20bbc21d547eeb746a5f1c385c10c61927cda242564002
font_01_sfnt_off00008b03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B03 5416 bytes
SHA-256: d99e7bceb8f3d5ab42226e11d5d194e4831b216254ed415211025a1fd050bec6
font_02_sfnt_off00009d69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D69 10432 bytes
SHA-256: 159d0cb520f0f02cc7ddeaac44a6e3e0c7025d7cbe7a4759b821e6393486e92d