Malicious PDF — malware analysis report

Static analysis result for SHA-256 0265a315a0927fd0…

MALICIOUS

PDF

36.3 KB Created: 2020-09-16 17:57:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02840e189653f76a3643555ca46ce6de SHA-1: 0640906b6b07b4b54000524b1c39378688d22327 SHA-256: 0265a315a0927fd0c61e760374ce68777be35c1668dfbaacc02102ed7f303956
154 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a product size chart, likely intended to trick users into clicking malicious links. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed for malicious redirection.

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/wix?keyword=hatley+pajamas+size+chart
    • http://files.fairwaycommunity.com/uploads/1/3/1/6/131606397/wifozaka_diratipupew_savelonitoko.pdf
    • http://files.operanovacr.com/uploads/1/3/0/9/130969820/leropojevumitiw.pdf
    • http://rofazo.retirementstrategies-wi.com/uploads/1/3/1/8/131871590/d864c7.pdf
    • http://files.enarts2.com/uploads/1/3/1/3/131380440/21544b5e.pdf
    • http://files.choralparts.org/uploads/1/3/0/9/130969791/wurimekozugedo_lufuteked.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/9511/3374/files/62812266562.pdf
    • https://cdn.shopify.com/s/files/1/0431/8022/8757/files/22672537166.pdf
    • https://cdn.shopify.com/s/files/1/0437/1572/3414/files/81903458313.pdf
    • https://cdn.shopify.com/s/files/1/0431/4444/6118/files/62314888774.pdf
    • https://cdn.shopify.com/s/files/1/0429/6821/9799/files/trey_songz_download_free_mp3.pdf
    • https://cdn.shopify.com/s/files/1/0427/6482/8839/files/no_manches_frida_megavideo.pdf
    • https://cdn.shopify.com/s/files/1/0438/0118/2369/files/doxedasal.pdf
    • https://cdn.shopify.com/s/files/1/0428/9436/0743/files/28939905903.pdf
    • https://cdn.shopify.com/s/files/1/0427/7207/0556/files/walt_disney_world_accomplishments.pdf
    • https://cdn.shopify.com/s/files/1/0433/7755/7660/files/xivujakanipavorit.pdf
    • https://cdn.shopify.com/s/files/1/0434/8493/8402/files/exfoliated_graphene_oxide_sheets.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ea9.bin
7db4537c75734a41efde47c3d2fa8e828ad0eb5e1679f81594c0da02b8712b4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EA9 5360 bytes
font_01_sfnt_off000060cf.bin
b8f823a545e22e3e047d0290fda0904091f2dab8dd56b1556cbb14f8f33d900f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60CF 10444 bytes

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