Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfe02621ec42c6e9…

MALICIOUS

PDF

71.1 KB Created: 2020-09-19 06:51:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00ee7a463a5e8ccc809f40942e6f657d SHA-1: bf8e43170127bcc0fa8ffac82268e34b07a1a807 SHA-256: cfe02621ec42c6e95ff11a9234cc1dae561f7f5312120a9ef77da4c08ecb457e
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Metformin' and a URL that appears to be a lure. The presence of a link farm further suggests malicious intent, likely to direct users to phishing or malware download sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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/wix?keyword=metformin+davis+drug+guide
    • http://koriwudi.abellcable.com/uploads/1/3/2/8/132815806/4180883.pdf
    • http://bowifilo.nolafoot.com/uploads/1/3/2/8/132814930/5619842.pdf
    • http://lepeporo.urbanedenbeauty.co.uk/uploads/1/3/1/4/131413418/5711969.pdf
    • http://files.traleeresponders.com/uploads/1/3/1/4/131453215/zofumilebo_tenebuzuw.pdf
    • http://files.hotepseminars.com/uploads/1/3/1/3/131398362/664b0649307cb28.pdf
    • https://e3479d30-af0d-417b-9b70-d637d3b9163e.filesusr.com/ugd/a42eed_16563af76676488eab9e73291d5826c5.pdf?index=true
    • https://8f02a986-2cb6-4ace-bf6b-23e429741613.filesusr.com/ugd/b7ab08_4a76a61df3f64538a6a8c39c2dd63f76.pdf?index=true
    • https://9b061072-35b1-4ded-9499-8bddd96cec99.filesusr.com/ugd/cb2bed_e92c5dbf31a04957bad6c31b11a6a710.pdf?index=true
    • https://815f9a96-b223-4cb4-a334-4059fa83d137.filesusr.com/ugd/3ed902_040335ec2972405cab2c3d0e15907db5.pdf?index=true
    • https://e23f6e14-2dd0-454a-aa6b-bae08902abdc.filesusr.com/ugd/ab059d_4b5507ec1d684f0a963a7513187fb4fd.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0439/1940/9320/files/51793014997.pdf
    • https://cdn.shopify.com/s/files/1/0432/3059/3192/files/zunufomaravawedibali.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_off0000d0ab.bin
9657589d4c8842001d8e1d146c62edde1311d6c2d6187798f88ef1785e02010c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD0AB 5260 bytes
font_01_sfnt_off0000e28e.bin
dd1c532c367dfd5b9bbbbf3b2a1a8731fa005711643af9c5c1e39a566bf3927e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE28E 14372 bytes

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