Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2d238a549921bc2…

MALICIOUS

PDF

55.0 KB Created: 2020-08-03 22:41:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f9ad718a9d7201bbb4dbf55aef27748 SHA-1: 01f2944279f33f35580c31036293e318c6010d55 SHA-256: c2d238a549921bc28c45b8ee63357201a5a9cd59be405dfa645584b3c11a83b5
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a mass external PDF link farm, indicating a phishing or scam attempt. The embedded URL 'https://ttraff.cc/pify?keyword=acl+reconstruction+rehabilitation+protocol+pdf' is a critical finding. Additionally, the document body contains a call-to-action phrase, further supporting the lure. No scripts were extracted, but the PDF structure itself is indicative of a malicious delivery mechanism.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=acl+reconstruction+rehabilitation+protocol+pdf
    • http://files.wyckedzplace.com/uploads/1/3/1/6/131637649/3026710.pdf
    • http://files.mygreensburg.org/uploads/1/3/1/4/131438538/sonafejukufipube.pdf
    • http://files.childrenfirstcurriculumusa.com/uploads/1/3/2/6/132681212/12b8bfe.pdf
    • https://cdn.shopify.com/s/files/1/0429/2493/3283/files/rrb_je_aptitude_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/0905/6668/files/97670105433.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kivamusefelozadadazub.pdf
    • https://cdn.shopify.com/s/files/1/0433/3400/8987/files/campbell_s_biology.pdf
    • https://cdn.shopify.com/s/files/1/0428/5497/3606/files/funukefediwavugelel.pdf
    • https://cdn.shopify.com/s/files/1/0437/7945/7173/files/57341701245.pdf
    • https://cdn.shopify.com/s/files/1/0427/4972/2790/files/romekerutibozigep.pdf
    • https://cdn.shopify.com/s/files/1/0432/5965/8398/files/95015646235.pdf
    • https://cdn.shopify.com/s/files/1/0431/1767/4656/files/84221910130.pdf
    • https://cdn.shopify.com/s/files/1/0435/8940/2779/files/63452322846.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_off00009909.bin
0fea53217a6e090878a25ce7528969f9620c2f8bdba908e969ad5106d69d75f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9909 5372 bytes
font_01_sfnt_off0000ab43.bin
fe7de1d189bc68eb4d09f407b0ba2efcf5043f7fbe9012188044516808f5b073		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB43 10376 bytes

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