Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6a8a6ee7ec8086c…

MALICIOUS

PDF

46.8 KB Created: 2020-08-09 02:27:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb8bb5cdc45d3f08715a0bdf80f221fe SHA-1: e72189189205459141f68f8c90d0fee14bd7dc57 SHA-256: f6a8a6ee7ec8086cc41d3e4a2b4799d9bb3c335c6b1ed1e19b3a7e576898a7ab
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary link, 'https://ttraff.com/pify?keyword=aptitude+shortcut+methods+and+formulas+pdf+free+download', is identified as a malicious redirector. The document body, though partially corrupted, contains text related to PDF downloads, suggesting a lure to entice users to click the malicious link. No scripts were extracted from this sample.

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.com/pify?keyword=aptitude+shortcut+methods+and+formulas+pdf+free+download
    • http://files.drip-drop.org/uploads/1/3/2/6/132695575/9023165.pdf
    • http://vubew.farragutrobotics.org/uploads/1/3/0/9/130969352/fenizaliparon.pdf
    • http://files.mariannezarzana.com/uploads/1/3/1/4/131482821/b2aeea9f7.pdf
    • http://files.martabrysha.com/uploads/1/3/1/4/131410479/7503276.pdf
    • http://ravav.masom.net/uploads/1/3/0/7/130776485/1d736607316418.pdf
    • https://cdn.shopify.com/s/files/1/0432/9563/7659/files/suzuki_hayabusa_2016.pdf
    • https://cdn.shopify.com/s/files/1/0437/8948/4194/files/win_7_host_file_location.pdf
    • https://cdn.shopify.com/s/files/1/0436/8026/8438/files/luxabujofajakemirex.pdf
    • https://cdn.shopify.com/s/files/1/0430/8670/8885/files/51734128065.pdf
    • https://cdn.shopify.com/s/files/1/0434/8005/5958/files/4_digit_addition_with_regrouping_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0428/9200/1433/files/site_reliability_engineering_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/0826/2297/files/subway_franchise_operations_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/devolikaki.pdf
    • https://cdn.shopify.com/s/files/1/0431/1128/4893/files/84668925131.pdf
    • https://cdn.shopify.com/s/files/1/0429/8476/7641/files/97490019625.pdf
    • https://cdn.shopify.com/s/files/1/0428/8030/3270/files/roxujozebirusu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2197/5197/files/26030803933.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_off000061db.bin
7cb9849265d224eb646d3ebceed6d30b9a9fd36ffb1de4a8ba899c534b3b8d2b
pdf-font-stream PDF embedded font (sfnt) at offset 0x61DB 5476 bytes
font_01_sfnt_off0000745d.bin
49f1c345582212729590e0456707ca92d3838aef8cba26fbcaa28f8c5b0a0640
pdf-font-stream PDF embedded font (sfnt) at offset 0x745D 2116 bytes
font_02_sfnt_off00007e28.bin
a66a0d5e50c7c827a78e801136dfb7c430e7339666e033448718dbcc03524a97
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E28 14620 bytes