Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6290d5505e15869…

MALICIOUS

PDF

38.9 KB Created: 2020-08-16 18:48:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: afdcd650757b42e9f987c4d6b46e9925 SHA-1: d66574d6d4f9e8613dee33666f191e1e0dc73dbc SHA-256: c6290d5505e1586987393907e10c24fefd8e6b406b941b09b945c62cc91ed386
150 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, indicating a phishing or redirection attempt. The primary malicious URL is https://ttraff.ru/pify?keyword=when+is+veev+reporting+earnings, which is used to lure victims by posing as information about earnings reports. The document body contains obfuscated text and the malicious URL, further supporting the phishing lure.

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.ru/pify?keyword=when+is+veev+reporting+earnings
    • http://files.echofallspreschool.net/uploads/1/3/0/9/130969681/751c58e70.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jivanup.pdf
    • https://cdn.shopify.com/s/files/1/0432/0998/2107/files/70102796271.pdf
    • https://cdn.shopify.com/s/files/1/0428/6778/5884/files/42350221810.pdf
    • https://cdn.shopify.com/s/files/1/0431/5945/3845/files/barefoot_investor_ibooks.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/8833338052.pdf
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/convert_base64_to_javascript_online.pdf
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/merriam_webster_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0429/6481/1927/files/62687540401.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dogudanivivakow.pdf
    • https://cdn.shopify.com/s/files/1/0432/2911/8627/files/aquamet_water_meter_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/7372/4825/files/elite_dangerous_cobra_mk_iv.pdf
    • https://cdn.shopify.com/s/files/1/0431/6938/2568/files/94832103276.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_off00005812.bin
c2292ad5c216241daee4a971af6c43096e6d9dcd311d20b12a83f38196590530		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5812 5120 bytes
font_01_sfnt_off0000698b.bin
7573a6c7f161a73ca900457be5990b87dc046fdb606c4bdabfc7c0ae000a906d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x698B 11260 bytes

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