Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e8a1f45f5327e7a…

MALICIOUS

PDF

159.8 KB Created: 2020-08-12 13:17:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2e20eeea0602f558d56fc2e497d67172 SHA-1: 1a04bb1e92d4a4ce9b0a92d877e892ea1676f9ad SHA-256: 2e8a1f45f5327e7a000d16e0722b629c895481d214ead0e5160bcb84e4f20da7
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing indicating a malicious redirector link. The embedded URL, https://ttraff.ru/pify?keyword=accidental+death+of+an+anarchist+analysis+pdf, is the primary indicator of malicious intent, likely leading to a phishing page or malware download. The ML classifier also strongly flagged this PDF as malicious.

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.ru/pify?keyword=accidental+death+of+an+anarchist+analysis+pdf
    • http://files.continuingeducationwnc.org/uploads/1/3/1/6/131607075/ab5c8b23b62deac.pdf
    • http://files.finksdeli.org/uploads/1/3/2/7/132741222/5b0259.pdf
    • http://xuredi.michaelpigneguy.com/uploads/1/3/1/1/131163960/lodujavil.pdf
    • http://files.staffordhockey.org/uploads/1/3/1/3/131379409/putefut.pdf
    • https://cdn.shopify.com/s/files/1/0449/9125/0590/files/gebijosutobifajupamaligo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8590/5576/files/nizaweki.pdf
    • https://cdn.shopify.com/s/files/1/0432/8328/4136/files/sezanojiripix.pdf
    • https://cdn.shopify.com/s/files/1/0428/3318/2886/files/scholarship_application_letter_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/6063/3504/files/bunomosofununilokuginudo.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/sort_numpy_array.pdf
    • https://cdn.shopify.com/s/files/1/0432/0228/1633/files/xogiwaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/8350/5570/files/inductive_and_deductive_methods.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/76244040641.pdf
    • https://cdn.shopify.com/s/files/1/0434/3051/0758/files/attestation_de_prise_en_charge_visa_canada.pdf
    • https://cdn.shopify.com/s/files/1/0435/7927/7467/files/zuboterem.pdf
    • https://cdn.shopify.com/s/files/1/0432/3108/4708/files/8868091877.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_off00023c12.bin
cb86b5460d0ec21c25b568f767f6bb2187c1b04a16980db2a3460d427965494a
pdf-font-stream PDF embedded font (sfnt) at offset 0x23C12 5336 bytes
font_01_sfnt_off00024e2b.bin
ed4865b9a346b8be5f04a4a4fa089154dfbed48523579b6ec84f20c36bf79901
pdf-font-stream PDF embedded font (sfnt) at offset 0x24E2B 10272 bytes