Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ac4f7f797871072…

MALICIOUS

PDF

53.7 KB Created: 2020-09-03 23:10:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1bf6b6c8ddb4c52dc24616cf20735e70 SHA-1: 6bfc17704b346ecdcd3861c38508d6e1b11f15b5 SHA-256: 6ac4f7f79787107294ac0cb0e7d4c1bb7f6e0c769a74b3ef33dec19bc932852b
162 Risk Score

Malware Insights

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

The PDF contains numerous links, including one identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a 'customer experience journey map template'. This URL, 'https://ttraff.ru/wix?keyword=customer+experience+journey+map+template', redirects to malicious infrastructure, indicating a phishing or redirection attempt. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=customer+experience+journey+map+template
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/5e8de6_6a0a69448a3f472cb3d8d19ca1ec4319.pdf
    • https://static.usrfiles.com/ugd/dcfb95_101149627a9d47a5b87c0a9c3bb89719.pdf
    • https://static.usrfiles.com/ugd/912de2_aa4f4ea8dc6a444ab4a8b6e9afa100b7.pdf
    • https://cdn.shopify.com/s/files/1/0429/6612/2662/files/kepipawepev.pdf
    • https://cdn.shopify.com/s/files/1/0439/9320/2846/files/use_of_articles_a_an_the_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0432/6391/8246/files/goloxusipodanexevigimafaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/6659/7288/files/54803368766.pdf
    • https://cdn.shopify.com/s/files/1/0429/7215/1959/files/fubixet.pdf
    • https://static.usrfiles.com/ugd/ea2f88_dca0288a4ca1419cb92038e8b9e25b16.pdf
    • https://static.usrfiles.com/ugd/b8c837_0d9c3d767978423cb507573b0db2f16b.pdf
    • https://cdn.shopify.com/s/files/1/0437/6127/0935/files/brocade_switch_icx_7250_configuration_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/6993/1671/files/41398549902.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_off000094b2.bin
06291869939b890b2dcd53df17c40cf4d8e0267e047ff701d7f16ab7c040dc8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94B2 5228 bytes
font_01_sfnt_off0000a672.bin
15814405a3b4000b214b4f9d3518ea2d474a5f8e7bff7c4efb663642096a9f1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA672 10480 bytes

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