Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0c0ee2472aa842f…

MALICIOUS

PDF

65.2 KB Created: 2020-08-31 05:57:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 224e7bfb54ffaf4da226bd8f5b39ddfb SHA-1: c07ef3ef790083ea6f1abff681f569d7cfa6bdb1 SHA-256: f0c0ee2472aa842faff62ef68dab05af84afc55c77a3d28f81a68dcf1e7e81f0
154 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to `ttraff.com`. The document body, though heavily obfuscated, contains text related to 'pharmaceutical manufactu' and the malicious URL. This suggests a phishing attempt where the user is tricked into clicking the link, likely leading to further malicious content. The presence of numerous other PDF links, many hosted on `static.usrfiles.com`, indicates a link farm strategy, potentially for SEO poisoning or distributing further payloads.

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.com/wix?keyword=handbook+of+pharmaceutical+manufactu
    • https://cdn.shopify.com/s/files/1/0432/1384/8733/files/94109822253.pdf
    • https://cdn.shopify.com/s/files/1/0431/7039/8372/files/bhagavad_gita_chapter_12_in_sanskrit.pdf
    • https://cdn.shopify.com/s/files/1/0431/4277/4938/files/xilifu.pdf
    • https://static.usrfiles.com/ugd/1e32c2_cc8660c5ca34479c88f54b58df43ea9a.pdf
    • https://static.usrfiles.com/ugd/197ed4_1632ab2d1cc34012874f33fd52fda688.pdf
    • https://static.usrfiles.com/ugd/b8c837_1cd0c15b13944d3c8c0a7ccd19bb429c.pdf
    • https://static.usrfiles.com/ugd/fedf23_a3bba0cbe0e7441c8f922b2d7806932b.pdf
    • https://static.usrfiles.com/ugd/b11f6d_e2abb4bb37b14875bab9ba334f52e15e.pdf
    • https://static.usrfiles.com/ugd/b8c837_e0e62151f5aa4009897c31c951668580.pdf
    • https://static.usrfiles.com/ugd/12daa7_d12acc3a16804e5bad93ee1b3c5bb6db.pdf
    • https://static.usrfiles.com/ugd/9219f8_0e72bd74fdab4802aeef2d007e1b5eaa.pdf
    • https://static.usrfiles.com/ugd/b98abb_d79e242c3f5a4db4a2d01d203a970ed8.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aaf2.bin
4aba2bb845853324476be69e5ed1bf4ff35002942389efac2b843cac1129f0e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAAF2 2828 bytes
font_01_sfnt_off0000b4ed.bin
ca27aebecdbf73f00e70cff2562f5d793d400bfe5338c943407fd159a8dbfc57		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB4ED 5264 bytes
font_02_sfnt_off0000c696.bin
2c7ebfdd395eea969d2820d8443a4b56a49daff7811cee46987caa73a72e6106		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC696 10540 bytes
font_03_sfnt_off0000e984.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE984 4324 bytes

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