Malicious PDF — malware analysis report

Static analysis result for SHA-256 952dc04d1c94577b…

MALICIOUS

PDF

48.0 KB Created: 2020-07-29 08:14:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0f6a01535a88033a02f794349abaaa9a SHA-1: c70c7544b1d29808a7ff1ae9420e47ec2f97f254 SHA-256: 952dc04d1c94577bb2ea3905e4a6069e695be75ebf7e136661868d9673c3aeaf
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The document body, though heavily obfuscated, appears to be a lure related to 'Eboy fashion guide'. The presence of a malicious redirector link and the sheer volume of external links strongly suggest a phishing or redirection attack aimed at leading 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.ru/pify?keyword=eboy+fashion+guide
    • http://files.yourfavoritept.com/uploads/1/3/2/3/132302992/telikuxolofomej.pdf
    • http://files.prizmdesigns.com/uploads/1/3/0/7/130739978/3c400dd4b0d5.pdf
    • http://files.michellegibbonsphotography.com/uploads/1/3/1/4/131406537/7258534.pdf
    • http://files.wildwestcoastseafoods.com/uploads/1/3/2/6/132696483/429530.pdf
    • https://cdn.shopify.com/s/files/1/0440/5755/9190/files/78686047005.pdf
    • https://cdn.shopify.com/s/files/1/0431/1908/3677/files/gevaj.pdf
    • https://cdn.shopify.com/s/files/1/0434/5161/3334/files/xikubapawopa.pdf
    • https://cdn.shopify.com/s/files/1/0433/9249/9877/files/44178245201.pdf
    • https://cdn.shopify.com/s/files/1/0433/7070/9150/files/dabasosokizuwur.pdf
    • https://cdn.shopify.com/s/files/1/0432/8721/6293/files/linupuzafovokavesis.pdf
    • https://cdn.shopify.com/s/files/1/0437/6998/7223/files/tevubelevuxavitelezodu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1586/3447/files/47048989064.pdf
    • https://cdn.shopify.com/s/files/1/0432/4887/7736/files/46320124224.pdf
    • https://cdn.shopify.com/s/files/1/0430/7327/4018/files/resutasutakolulutirepito.pdf
    • https://cdn.shopify.com/s/files/1/0433/6871/0309/files/jemilotudawiwe.pdf
    • https://cdn.shopify.com/s/files/1/0437/1218/4474/files/gugokiwapotozetexamaxifi.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/
    • https://cdn.shopify.com/s/files

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d14.bin
e4ffbaa39c18e6abb2d7bf6ec27c40ae779c72a638d342d03bb2e756ea1b5f82
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D14 5044 bytes
font_01_sfnt_off00008e2d.bin
cf176dad67e5d9526f8fbea43adc8ad2fc00c0e514a8214ab72fb50cf3c9721c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E2D 10808 bytes