Malicious PDF — malware analysis report

Static analysis result for SHA-256 92c9e8c8b20efe26…

MALICIOUS

PDF

48.5 KB Created: 2020-08-30 08:40:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f3ca54be4e431f3b0e1c81dba7a19e7c SHA-1: 4f2b044d64de6de5b058a927b75407c882a0e5ba SHA-256: 92c9e8c8b20efe269270298c3384c3696acb44c6bd31825714852f4e945a8309
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged as malicious by a machine learning classifier and contains a significant number of embedded links. One of these links, 'https://ttraff.com/wix?keyword=despacito+malayalam+mashup+download', points to known malicious redirector infrastructure. The document appears to be a link farm, leveraging SEO-like filenames on Shopify and other domains to disguise its malicious intent. The primary goal is likely to redirect users to malicious sites.

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=despacito+malayalam+mashup+download
    • https://cdn.shopify.com/s/files/1/0432/6011/7160/files/bulisawarolukef.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/address_in_new_york.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/somediwewemozeluwixepopu.pdf
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/bollywood_5._1_mkv_video.pdf
    • https://cdn.shopify.com/s/files/1/0435/7976/8995/files/33059757063.pdf
    • https://cdn.shopify.com/s/files/1/0431/9094/3902/files/losorapakunoxo.pdf
    • https://static.usrfiles.com/ugd/b8c837_e5d9d772ef3049d38fbfb0259d316877.pdf
    • https://static.usrfiles.com/ugd/b8c837_12918248429a48a5a194bf0ac226cdbc.pdf
    • https://static.usrfiles.com/ugd/b8c837_ab510ceca5b543cf8b782a77f8b8efb8.pdf
    • https://static.usrfiles.com/ugd/b8c837_f7faf0c4d8464fb0b9004b021cb2f28d.pdf
    • https://static.usrfiles.com/ugd/accd1f_133e81f9b7f747d483dd00e7f233ff9a.pdf
    • https://static.usrfiles.com/ugd/b8c837_5915ebbfb8bb455f8e6a356e97e78d53.pdf
    • https://static.usrfiles.com/ugd/628a76_87589575b69f4e358fc1d401ee5e630e.pdf
    • https://static.usrfiles.com/ugd/2f3ac6_cce32468650644e281128f4e2c63475a.pdf
    • https://static.usrfiles.com/ugd/0fdb6d_f1d029a38594494f826b0db22d2b9227.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
stream_005_off00007ea3.bin
4799580824fbe0aace2de159f104c626fc7ce63a00efcda860c19785dab952a1		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x7EA3 22780 bytes
font_00_sfnt_off00004a82.bin
13dd22407cda759bfd8ed5099289d35e574bb1910c0dc28efc86b93a1db801a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A82 5292 bytes
font_01_sfnt_off00005c70.bin
d585e2c5b08fe05c2687bec9eaf16d01ff51a62990b26c4653736c387b194b94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C70 9956 bytes
font_03_sfnt_off0000a68a.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA68A 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.