Malicious PDF — malware analysis report

Static analysis result for SHA-256 01e30ea5caf7301f…

MALICIOUS

PDF

119.5 KB Created: 2020-08-15 12:11:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d95f7554cb455de342785afc9a3a91aa SHA-1: c8d03572c3b4842e3cb1b67c95ddf784229d9f34 SHA-256: 01e30ea5caf7301ff66b5d8bb14bc98b782de35bb0305583dcfd55280e2dda44
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious infrastructure, specifically 'ttraff.ru'. The document body, though heavily obfuscated, contains a reference to this same URL. This suggests the primary purpose is to redirect the user to a malicious site, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.ru/wb?keyword=euler%20equation%20fluid%20dynamics%20pdf
    • http://files.wmcmusic.net/uploads/1/3/2/6/132681452/fobajimedot.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/88989224067.pdf
    • https://cdn.shopify.com/s/files/1/0439/1020/1499/files/38334071077.pdf
    • https://cdn.shopify.com/s/files/1/0433/8820/7254/files/bsnl_plans_maharashtra.pdf
    • https://cdn.shopify.com/s/files/1/0431/0522/2818/files/certificado_antecedentes_judiciales_policia.pdf
    • https://cdn.shopify.com/s/files/1/0437/4121/6917/files/84218229256.pdf
    • https://cdn.shopify.com/s/files/1/0435/3690/8439/files/56470831778.pdf
    • https://cdn.shopify.com/s/files/1/0432/7004/5864/files/amulet_book_7_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/0981/0327/files/24497620693.pdf
    • https://cdn.shopify.com/s/files/1/0437/4344/5141/files/antonin_artaud_selected_writings.pdf
    • https://cdn.shopify.com/s/files/1/0437/7152/7325/files/2e_chronomancer.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015929.bin
8f0fd426b11867c47d67412f9706388c7da5094a79055fa79a59c4b92a65902c
pdf-font-stream PDF embedded font (sfnt) at offset 0x15929 6244 bytes
font_01_sfnt_off00016e66.bin
758cd430d062fde97d748d798ba57b17b11243e98f89b825a2a8ca877caa5671
pdf-font-stream PDF embedded font (sfnt) at offset 0x16E66 5484 bytes
font_02_sfnt_off00018109.bin
02964ffed6ae4886d26fec59cb4358fe0187ea82feb117eb27dd759b1f177f0c
pdf-font-stream PDF embedded font (sfnt) at offset 0x18109 17528 bytes
font_03_sfnt_off0001b813.bin
e31dccccfc15ab6407af20addf4b5c57e83b458fa7a35a28957ebf11a7796f8d
pdf-font-stream PDF embedded font (sfnt) at offset 0x1B813 16836 bytes