Malicious PDF — malware analysis report

Static analysis result for SHA-256 2be01c99ecb2a48c…

MALICIOUS

PDF

47.0 KB Created: 2020-07-28 18:43:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 242e0245eb41b3cbca6109c17f923eb3 SHA-1: 283699cf7666b2dcac24c490df9d43dbcda3aed5 SHA-256: 2be01c99ecb2a48c943b79775b3dc889637d1e0d3cd97c23bf420615ca866252
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The embedded URLs, particularly the one pointing to 'ttraff.cc', are likely part of a phishing or malware distribution scheme. The document body appears to be obfuscated or corrupted, preventing a clear understanding of its intended 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.cc/pify?keyword=beaumont+and+brown+hyatt+sheets
    • http://files.my-mediamatters.tech/uploads/1/3/2/7/132740435/6028230.pdf
    • http://files.queenbandcompany.com/uploads/1/3/0/9/130969522/0180297a26485d.pdf
    • http://files.hazelandzadiegifts.com/uploads/1/3/1/6/131606397/504028e9.pdf
    • http://files.artccosgrove.com/uploads/1/3/1/3/131379776/6532881.pdf
    • http://files.stayingsharpasasenior.com/uploads/1/3/1/4/131409909/8baa0ea2d3a1e.pdf
    • http://files.stayings
    • https://cdn.shopify.com/s/files/1/0430/0242/9593/files/vezuvurugikuwefugise.pdf
    • https://cdn.shopify.com/s/files/1/0430/2045/1997/files/64903634590.pdf
    • https://cdn.shopify.com/s/files/1/0432/2417/0664/files/metasinafavagebe.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3370/files/zekewepovurino.pdf
    • https://cdn.shopify.com/s/files/1/0429/8987/9445/files/dobikaroxetir.pdf
    • https://cdn.shopify.com/s/files/1/0430/9427/8293/files/14093706008.pdf
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/79992734076.pdf
    • https://cdn.shopify.com/s/files/1/0434/9041/0658/files/sufodubodiwuramo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8640/5029/files/53481365968.pdf
    • https://cdn.shopify.com/s/files/1/0437/3879/2085/files/21774422560.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bararilisubolubudikolumo.pdf
    • https://cdn.shopify.com/s/files/1/0428/3141/3404/files/77761958334.pdf
    • https://cdn.shopify.com/s/files/1/0434/9214/7352/files/2272915825.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a65.bin
4613d5e4314f7b9643d6972372b033f4733d2752d7386bd8585e6d5042bbbf45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A65 5248 bytes
font_01_sfnt_off00008c18.bin
5f5762e2d7cbd8edc9091ed7155813c5c0a53f42f379b8e474f1f29638bfd9df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C18 10196 bytes

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