Malicious PDF — malware analysis report

Static analysis result for SHA-256 735889fe485c4f9b…

MALICIOUS

PDF

50.3 KB Created: 2020-09-18 23:16:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f089aedc68cd6093bdbad6d674dbd06c SHA-1: 2c04d0f7601d25fe3f4f64df4b32ae8121ba4eb4 SHA-256: 735889fe485c4f9b3fb88cf5339b1655a809d6fa52f6ea3cef683aca4ac95236
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to external resources, indicating a link farm. One prominent link, 'https://ttraff.club/wix?keyword=mount+and+blade+guide+imgur', is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains this URL and other Shopify links, suggesting a lure to a malicious site.

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.club/wix?keyword=mount+and+blade+guide+imgur
    • http://files.caseworkproductions.com/uploads/1/3/0/8/130813985/pofosez-dodep.pdf
    • http://files.hamanpropertymanagement.com/uploads/1/3/1/3/131384145/1593095.pdf
    • http://files.medic-rescue.co.uk/uploads/1/3/2/7/132712334/kuzube_jetujawowefusi_gexineretuf_gizaz.pdf
    • http://gelaz.abaofillinois.org/uploads/1/3/0/7/130740055/e92953a5d5.pdf
    • http://files.on-course.com.au/uploads/1/3/1/3/131380299/4cb1854b13dc631.pdf
    • http://files.jmkaukola.com/uploads/1/3/1/3/131382470/dotofuguvulo_jewafifemuvedaj.pdf
    • http://mejezigal.alatorreartwork.com/uploads/1/3/1/4/131409090/cb15ae5eb23.pdf
    • http://files.asldeanpapalia.com/uploads/1/3/2/6/132681670/gixazeguz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/8332/3800/files/annexure_f_in_word_format.pdf
    • https://cdn.shopify.com/s/files/1/0438/2071/2098/files/66921094124.pdf
    • https://cdn.shopify.com/s/files/1/0430/8090/8949/files/wotob.pdf
    • https://cdn.shopify.com/s/files/1/0438/8713/2827/files/python_udp_server.pdf
    • https://cdn.shopify.com/s/files/1/0434/4853/3144/files/moxipomomifugurogenobid.pdf
    • https://cdn.shopify.com/s/files/1/0437/4432/9889/files/chauhan_logo_image.pdf
    • https://cdn.shopify.com/s/files/1/0461/5186/0387/files/51528999685.pdf
    • https://cdn.shopify.com/s/files/1/0427/8665/2316/files/leadbeater_astral_plane.pdf
    • https://cdn.shopify.com/s/files/1/0430/3070/8385/files/64192447847.pdf
    • https://cdn.shopify.com/s/files/1/0429/7107/0617/files/xifivuwavebi.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_off0000886b.bin
3fcdbf99fa1055b7357d3fa78bbfb7bb5e70ea5baf28c45ec57403294cfbb1cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x886B 5112 bytes
font_01_sfnt_off000099bf.bin
725a0e1618ab855a1917dbb0ef969b4c5c68432b0496af256875ef74a91cc194		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99BF 10200 bytes

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