Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e0315bda2bdaf58…

MALICIOUS

PDF

43.6 KB Created: 2020-08-26 10:46:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 13a8f249d92171ed753a3316c7eb420b SHA-1: 23dbb1d4a078db9f0b205da8702d9c7a07af3359 SHA-256: 1e0315bda2bdaf5896c4eb8a42bf765a9ab21c4eced37248d40067c5c0c4dd5a
152 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.me'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though partially corrupted, contains the same text as the malicious URL's keyword parameter, suggesting a lure. The primary malicious IOC is the redirector URL, which likely leads to a phishing page or malware download.

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/pify?keyword=jimmy+page+by+jimmy+page+book
    • http://files.ramsportsnetwork.com/uploads/1/3/1/3/131381021/zumorotanosunufob.pdf
    • http://paxusik.queenbnaturals.com/uploads/1/3/1/8/131857090/zawoxul.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jedajuzosefowi.pdf
    • https://cdn.shopify.com/s/files/1/0438/2559/4530/files/excel_index_function_between_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0430/5007/4269/files/83642515020.pdf
    • https://cdn.shopify.com/s/files/1/0437/7988/3170/files/46482460928.pdf
    • https://cdn.shopify.com/s/files/1/0435/2344/0804/files/liximedabofutorivugobudod.pdf
    • https://cdn.shopify.com/s/files/1/0432/3577/0535/files/xijoza.pdf
    • https://cdn.shopify.com/s/files/1/0430/6200/1821/files/3012079518.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94766401197.pdf
    • https://cdn.shopify.com/s/files/1/0428/4953/4111/files/67549113489.pdf
    • https://cdn.shopify.com/s/files/1/0464/2494/8888/files/nikupelesa.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_off00006cf6.bin
3b0339f55eb338ab8604a1c6fa61d2e5c6ecd6dbefe19a2f6f6a2b41e70815b9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CF6 5204 bytes
font_01_sfnt_off00007ea6.bin
b1f4beda9fb7763d5608a9cf1aa7d4f94cd33fad222478ca1fd30313acdf48bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA6 10292 bytes