Malicious PDF — malware analysis report

Static analysis result for SHA-256 560238a833a0f803…

MALICIOUS

PDF

40.7 KB Created: 2020-08-25 19:12:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0bcc40be0347e053d32a6aa6b76aa40e SHA-1: 1da63e1ceee7350db1b6f2f3e03c146e9e9a69ed SHA-256: 560238a833a0f8030e39011827b017913307d5469dcd7a2d6c92defbdc5a3144
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.me, which is designed to lure users to malicious content. The document body, though heavily obfuscated, contains text related to 'business forecasting' and includes the malicious URL, suggesting a social engineering pretext. The presence of a PDF link farm further indicates malicious intent to distribute links to potentially harmful content.

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.me/pify?keyword=business+forecasting+wilson+keating
    • http://files.mikesbrass.com/uploads/1/3/1/4/131437660/94d81d853a.pdf
    • https://cdn.shopify.com/s/files/1/0436/1116/0738/files/dolerowukin.pdf
    • https://cdn.shopify.com/s/files/1/0438/0455/7469/files/cranfield_commentary_on_romans.pdf
    • https://cdn.shopify.com/s/files/1/0434/6960/2978/files/lagababizupaxugumofota.pdf
    • https://cdn.shopify.com/s/files/1/0429/1490/6275/files/generate_unique_id_javascript.pdf
    • https://cdn.shopify.com/s/files/1/0432/6863/6840/files/mulujokavunamubumuke.pdf
    • https://cdn.shopify.com/s/files/1/0431/1747/8044/files/2811475156.pdf
    • https://cdn.shopify.com/s/files/1/0433/6127/1959/files/nginx_ssl_config.pdf
    • https://cdn.shopify.com/s/files/1/0431/0918/7750/files/ratumupovudipi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6341/8784/files/tunemobie_spotify_music_converter.pdf
    • https://cdn.shopify.com/s/files/1/0434/8923/1000/files/31917210411.pdf
    • https://cdn.shopify.com/s/files/1/0432/9455/6324/files/83721077630.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8280/files/rejowuxetu.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_off00006163.bin
1326bbf9a503c6937e7c05bf1eca6f85d4a0dfe616dd0e0bb0a1b2b12e70b958
pdf-font-stream PDF embedded font (sfnt) at offset 0x6163 5252 bytes
font_01_sfnt_off00007366.bin
d29245f1988b44855d303b8ae9d90bdc068ecbee4720fb929b65b4702796dff0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7366 10192 bytes