Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfc7e3c227654781…

MALICIOUS

PDF

68.1 KB Created: 2020-08-10 11:07:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ec44bab8ec9c60a21849a4c9035def5 SHA-1: ef43a832dcb81440e455b32fbfdefa6fba5badb9 SHA-256: bfc7e3c227654781c6fc445082013520aa671bba78be9e50128e52a6d6a278a3
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=panasonic+conduit+catalog+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0432/8990/3259/files/minitakewarerisuvali.pdf'. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the malicious URL, suggesting a lure to a phishing or malware distribution site.

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/pify?keyword=panasonic+conduit+catalog+pdf
    • http://kewobirag.allseasonspr.com/uploads/1/3/0/9/130969723/7200812.pdf
    • http://files.atascosainteragencycouncil.org/uploads/1/3/0/9/130969166/3205623.pdf
    • http://files.hackettstownhealthfood.com/uploads/1/3/0/7/130740522/zapebasax-pikilox-neduzasatajuv.pdf
    • https://cdn.shopify.com/s/files/1/0432/8990/3259/files/minitakewarerisuvali.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/45309765952.pdf
    • https://cdn.shopify.com/s/files/1/0431/7007/0690/files/61469535483.pdf
    • https://cdn.shopify.com/s/files/1/0431/6754/7546/files/pejonakulejizi.pdf
    • https://cdn.shopify.com/s/files/1/0437/1097/2056/files/17918419335.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fuwofomakilaxenifotet.pdf
    • https://cdn.shopify.com/s/files/1/0435/8039/1585/files/woboma.pdf
    • https://cdn.shopify.com/s/files/1/0438/7107/6520/files/typhoid_fever_pathophysiology.pdf
    • https://cdn.shopify.com/s/files/1/0430/9912/7957/files/body_by_jake.pdf
    • https://cdn.shopify.com/s/files/1/0427/9438/5575/files/62812649513.pdf
    • https://cdn.shopify.com/s/files/1/0432/2004/1886/files/54867085533.pdf
    • https://cdn.shopify.com/s/files/1/0434/5036/8152/files/dezilefaxafunugav.pdf
    • https://cdn.shopify.com/s/files/1/0435/4228/2399/files/waziwuzubaro.pdf
    • https://cdn.shopify.com/s/files/1/0433/5481/6665/files/37536576451.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_off0000b5f1.bin
400876905bb4d9ff9102d0422bde14e0263ca4011bf1d90a7615d9b9348bd73c
pdf-font-stream PDF embedded font (sfnt) at offset 0xB5F1 5228 bytes
font_01_sfnt_off0000c7d4.bin
ccbb248ef69fe846f102a2b64f4284da0cea96b1b1654d77ada8b14fe235f833
pdf-font-stream PDF embedded font (sfnt) at offset 0xC7D4 21184 bytes