Malicious PDF — malware analysis report

Static analysis result for SHA-256 14e7d56c12540147…

MALICIOUS

PDF

59.4 KB Created: 2020-09-04 01:48:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50d3dcbab72d15694befc93a40d4ea69 SHA-1: d339d095d4c3f82a90479f5aacee2290ba3f30c0 SHA-256: 14e7d56c125401474c4d987b06bd54a033750afdf97f0da4c4a2fa761529bcf0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to a harmful site. The document body, though heavily obfuscated, contains the same URL and appears to be a lure related to 'mandatory reporting'. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious 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/wix?keyword=define+the+term+mandatory+reporting
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/apparaitre_hors_ligne_messenger_android_2018.pdf
    • https://cdn.shopify.com/s/files/1/0449/7666/8831/files/rogers_cable_tv_guide_online.pdf
    • https://cdn.shopify.com/s/files/1/0431/7259/3821/files/abcde_del_melanoma.pdf
    • https://static.usrfiles.com/ugd/6846fe_9de3e54571144813bca2ae7bb054baf1.pdf
    • https://static.usrfiles.com/ugd/b8c837_db36a262cf0345a29e1921386e480fe3.pdf
    • https://static.usrfiles.com/ugd/b8c837_4631331d8c244dd9b1bd6ea3604d24a1.pdf
    • https://static.usrfiles.com/ugd/69695d_6ed76cad7d264bd887a3006a521e868b.pdf
    • https://static.usrfiles.com/ugd/9ff9b8_6182c0c1f4ab435292946387a603622a.pdf
    • https://static.usrfiles.com/ugd/7c41c1_a95c47f686644df8ace3ae4137e33b88.pdf
    • https://static.usrfiles.com/ugd/4c3d6a_53c351968d7849229f276cfbc0e794ed.pdf
    • https://static.usrfiles.com/ugd/b56239_1833d25aea574f7f96f4ea178187f751.pdf
    • https://static.usrfiles.com/ugd/38955b_a41657014bde4032860eb1a0c8d4ce85.pdf
    • https://static.usrfiles.com/ugd/dad7b5_11f7266c3f6f4c36b0a9a85010fd2faa.pdf
    • https://cdn.shopify.com/s/files/1/0437/5091/6247/files/dos_mundos.pdf
    • https://cdn.shopify.com/s/files/1/0436/4346/9974/files/zasexosemug.pdf
    • https://cdn.shopify.com/s/files/1/0435/5293/1995/files/sazatetum.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009e09.bin
c8244859cade748b428bdcc47036ea363ecba5a229a1da5c1f4006e2f59077a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E09 5132 bytes
font_01_sfnt_off0000af5e.bin
7c1d621dcefa21ef8725181f78270bd84e679910175eb4f216ca46b854d56dc7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF5E 10340 bytes
font_02_sfnt_off0000d26f.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD26F 4324 bytes

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