Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ed670c2537df13e…

MALICIOUS

PDF

43.5 KB Created: 2020-08-02 14:49:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb76d29b7a8223ea7541afa13ddefd88 SHA-1: b7af9abcb35334fc81a4f3313683836f3c669a84 SHA-256: 6ed670c2537df13e1020245806698a551757c3020309cf938c21254f40f53ed8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains, forming a link farm. One of these links, 'https://ttraff.ru/pify?keyword=sekiro+precious+bait', is identified as a malicious redirector. This suggests the document is designed to lure users into clicking malicious links, potentially leading to further compromise.

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=sekiro+precious+bait
    • http://files.lotusbloomfamily.org/uploads/1/3/0/7/130775249/jisofevemes-saweseraxetusu-beginan-lejevez.pdf
    • http://files.jvjewelers.com/uploads/1/3/0/7/130740026/5200e3cc6.pdf
    • http://files.shopmiddleground.com/uploads/1/3/0/7/130740391/nabomowafowudiruwe.pdf
    • http://files.crossfitrochester.com/uploads/1/3/1/4/131408798/kinagutafidafo.pdf
    • http://files.irrelevantdeportes.com/uploads/1/3/0/7/130775205/7802638.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0434/0498/4483/files/43559849774.pdf
    • https://cdn.shopify.com/s/files/1/0430/1094/9273/files/giperumonutapomen.pdf
    • https://cdn.shopify.com/s/files/1/0438/3673/5645/files/sigedonexadowejunugexipup.pdf
    • https://cdn.shopify.com/s/files/1/0438/4541/9165/files/principles_of_macroeconomics_case_fair_oster.pdf
    • https://cdn.shopify.com/s/files/1/0433/6579/3942/files/39889495357.pdf
    • https://cdn.shopify.com/s/files/1/0440/5470/8389/files/69723489184.pdf
    • https://cdn.shopify.com/s/files/1/0433/8676/5475/files/66045985926.pdf
    • https://cdn.shopify.com/s/files/1/0430/0842/6147/files/80262222335.pdf
    • https://cdn.shopify.com/s/files/1/0433/8027/7406/files/61112215647.pdf
    • https://cdn.shopify.com/s/files/1/0428/1755/2543/files/fevegujuxufalegewudigox.pdf
    • https://cdn.shopify.com/s/files/1/0431/9959/4656/files/50045254119.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000605e.bin
d8d8ed647e931bb041a957120e0a525fd774a1252c8f4ec381c5412310605b79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x605E 4976 bytes
font_01_sfnt_off00007151.bin
1eaf4973693aaeedc343d8f623dd4297d9554cbbefd43e37efe13ceda3572341		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7151 9980 bytes
font_02_sfnt_off00009365.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9365 4324 bytes

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