Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea642b9ea3daf9c0…

MALICIOUS

PDF

44.1 KB Created: 2020-08-10 07:16:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eba7acf18044177f01a890ea52b9328d SHA-1: bcbe4cebb965ddf91cd6884f7768ac5adfa37f14 SHA-256: ea642b9ea3daf9c07116ac44beac5e6cba5f31a45c83a9ef9e61248a82d1e166
154 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with the primary redirector URL being https://ttraff.cc/pify?keyword=english+words+with+kannada+meaning+pdf. This indicates a likely attempt to manipulate search engine results or to redirect users to malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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.cc/pify?keyword=english+words+with+kannada+meaning+pdf
    • http://xuderej.blueridgelitproject.org/uploads/1/3/1/4/131453574/38bb2356a.pdf
    • http://files.chimachancreations.com/uploads/1/3/1/6/131606289/bae57c69b2.pdf
    • http://garudi.mustlikeplants.com/uploads/1/3/0/7/130775045/4085469.pdf
    • http://files.caymanpace.ky/uploads/1/3/1/4/131483069/a1dff03573.pdf
    • https://cdn.shopify.com/s/files/1/0430/9313/1425/files/bixonubifewipe.pdf
    • https://cdn.shopify.com/s/files/1/0437/6382/6840/files/vokoxum.pdf
    • https://cdn.shopify.com/s/files/1/0435/9523/5490/files/98195072628.pdf
    • https://cdn.shopify.com/s/files/1/0430/7789/4293/files/sabadiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/1900/2268/files/75216968314.pdf
    • https://cdn.shopify.com/s/files/1/0427/4490/5884/files/xifutonutetomaparev.pdf
    • https://cdn.shopify.com/s/files/1/0435/3448/3605/files/65156774091.pdf
    • https://cdn.shopify.com/s/files/1/0439/5070/2750/files/90925045768.pdf
    • https://cdn.shopify.com/s/files/1/0428/3770/4867/files/manopokobogurifupixuja.pdf
    • https://cdn.shopify.com/s/files/1/0428/8613/5961/files/le_nozze_di_figaro_sull_aria.pdf
    • https://cdn.shopify.com/s/files/1/0431/0591/0935/files/20378978480.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e26.bin
a3c7e47da085ef10153cf2a227a900d1fc3165d4b7cbb94a7c6442cdb0d4f70e
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E26 5356 bytes
font_01_sfnt_off0000703f.bin
258863406fe99b343449ef2ec04ac6b02559ce8842377dddef5c8ffe95007c69
pdf-font-stream PDF embedded font (sfnt) at offset 0x703F 11428 bytes
font_02_sfnt_off0000952f.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x952F 4324 bytes