Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ee27612c83c4908…

MALICIOUS

PDF

41.7 KB Created: 2020-10-30 07:58:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 3711d7520523bf67bca94417f8f18b85 SHA-1: 38ca417d4ba1b0dd7d972413d25a9984ba26ddc8 SHA-256: 0ee27612c83c49082e6c3244c905dcaa588ddfca2a9c27b10166fea2a9b78a21
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a lure related to IKEA Malm bed instructions, but the embedded link redirects to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The primary attack vector appears to be social engineering via a malicious link within the document.

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.me/pify?keyword=ikea+malm+bed+instructions+2007 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370744/normal_5f9b642ae2894.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374376/normal_5f8f1a54da188.pdfIn PDF document text
    • https://papunagaku.weebly.com/uploads/1/3/1/3/131384156/3100436.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369779/normal_5f8fb4f6475c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378378/normal_5f8e516df2173.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423728/normal_5f993dd68510f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371265/normal_5f989dc1dcc72.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/8c467bb9-fbd4-453d-8794-42151eaa9359/33667255202.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62fb9cd9-6290-447c-a400-6ce0c15266d5/40514941884.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/3648/9893/files/learning_guitar_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/8193/9144/files/maths_questions_gcse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/2820/1639/files/orbitalum_165_ca_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91f4e5bf-d036-4592-a166-9db11b5f5410/56705615428.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_off00006494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6494 5580 bytes
SHA-256: aaf89d95613767cbd7ff7bbb397bf791508c92f6e15e8febab9be3e9f83de6e9
font_01_sfnt_off0000777e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x777E 10268 bytes
SHA-256: 8bde50323f0d0b63fab978f32e891cc216a7e8551a82dbc494d422ca11855563

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