Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0129925fae891db…

MALICIOUS

PDF

57.6 KB Created: 2020-08-31 14:08:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06e4ad3d8de9a02a9c91f90c665e68ae SHA-1: 29afe06d5669c310a859ff494ccd80debecfa73a SHA-256: e0129925fae891db9bcd076de1b99996130086269a4f6012856e697a2bca8a5e
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=avoir+french+forms'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the same URL, reinforcing the lure. The primary intent appears to be redirecting the user to malicious infrastructure.

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.
  • 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.
  • 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.cc/pify?keyword=avoir+french+forms
    • https://cdn.shopify.com/s/files/1/0427/6515/6508/files/1613151446.pdf
    • https://cdn.shopify.com/s/files/1/0462/5170/4469/files/podasojokowap.pdf
    • https://cdn.shopify.com/s/files/1/0432/4445/4056/files/46882395482.pdf
    • https://cdn.shopify.com/s/files/1/0429/3325/6345/files/35995680818.pdf
    • https://cdn.shopify.com/s/files/1/0429/7208/6435/files/62386178371.pdf
    • https://static.usrfiles.com/ugd/58a813_5dcc61ada84b476b8dc49c4f6cfa2ecd.pdf
    • https://static.usrfiles.com/ugd/edb4a7_b340a1ba748644deab205cb2ca1941ab.pdf
    • https://static.usrfiles.com/ugd/badafb_281aa58f0b924c2b833e359a2b7b050f.pdf
    • https://cdn.shopify.com/s/files/1/0430/9948/8423/files/telugu_bajana_songs_com.pdf
    • https://cdn.shopify.com/s/files/1/0431/7095/5415/files/82726717632.pdf
    • https://cdn.shopify.com/s/files/1/0437/1516/6357/files/2841083290.pdf
    • https://cdn.shopify.com/s/files/1/0429/5553/8595/files/anatomy_for_sculptors_uldis_zarins.pdf
    • https://cdn.shopify.com/s/files/1/0434/5797/0329/files/chemistry_alberta_20_30_online_textbook.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_off00009b2f.bin
6072550e3cb5323b15b3e655d49ad14408d575f2cbc3f1dd844178fa93e17db7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B2F 4928 bytes
font_01_sfnt_off0000abdd.bin
cbf70f8f6f245cc25b2c07dc3accd1550328ff2750ae3331802e1656bff8c8d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABDD 14668 bytes

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