Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d063e18ae70bb15…

MALICIOUS

PDF

41.3 KB Created: 2020-08-29 12:49:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 819cac839117576f8401c1784ca314db SHA-1: f386b5fdffbd3789049742c306aecf75da5f09b5 SHA-256: 0d063e18ae70bb1539702fcc0eb27e90a77a85ec01627aba8b62c38e077676cd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, with at least one identified as a redirector to malicious infrastructure. The document body, though partially corrupted, suggests a lure related to 'Classement du football universitaire'. The presence of numerous links, including one pointing to a known malicious redirector, indicates an attempt to lead the user to harmful content. The ML classifier also strongly flagged this PDF as malicious.

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=classement+du+football+universitaire
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9467339244.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20659662050.pdf
    • https://cdn.shopify.com/s/files/1/0431/4782/1212/files/49155900145.pdf
    • https://static.usrfiles.com/ugd/b8c837_51de7105e05e4e798e6da468956b3eb4.pdf
    • https://static.usrfiles.com/ugd/09273f_161c5472cc404401a304502bd9ef9300.pdf
    • https://static.usrfiles.com/ugd/b8c837_4373865ff713443e9c4123674c41c7e9.pdf
    • https://static.usrfiles.com/ugd/1f2646_4e0ce0a6c0b54d08890ce4cd75933b50.pdf
    • https://static.usrfiles.com/ugd/b5472a_c5ef1664911f4fb98e1ad9770d79a894.pdf
    • https://static.usrfiles.com/ugd/b8c837_d0a240b999dd4962a9aaa97d70bbd310.pdf
    • https://cdn.shopify.com/s/files/1/0429/9482/7418/files/roses_bokeh_images_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/0043/0746/files/69153676113.pdf
    • https://cdn.shopify.com/s/files/1/0434/1304/5398/files/rockface_tv_series.pdf
    • https://cdn.shopify.com/s/files/1/0428/8118/8003/files/91586771520.pdf
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/83044929963.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_off000060cd.bin
de7423a11610fc10e2b3ebebb90b9ba8caefd5aeb586608f1c5ec04c38f205ec
pdf-font-stream PDF embedded font (sfnt) at offset 0x60CD 5160 bytes
font_01_sfnt_off00007242.bin
967a47db49509949e9a591bbbc374cd253086f4af60d15e75928699ebdbfa33a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7242 11704 bytes