Malicious PDF — malware analysis report

Static analysis result for SHA-256 8aedb3a15ca0cc37…

MALICIOUS

PDF

33.9 KB Created: 2020-08-01 19:47:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02f219a983597003426068898a6d2f82 SHA-1: a8a6ae21b9ea8f83c937e7f610eba24dc403c227 SHA-256: 8aedb3a15ca0cc3707b978a557260c4a08361f115103590b664369a541b2f832
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=movie+times+saginaw'. This URL is presented within the document body, disguised as a lure for 'movie times saginaw'. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to shopify.com domains hosting other PDFs. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering via a deceptive link.

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=movie+times+saginaw
    • http://files.blnetworking.net/uploads/1/3/0/7/130775850/7805170.pdf
    • http://files.cpaforfamilywealth.com/uploads/1/3/0/7/130775868/075bb.pdf
    • http://files.nationalhoteltoowoomba.com/uploads/1/3/0/7/130775396/3254230.pdf
    • http://files.badtasteco.com/uploads/1/3/0/8/130874248/tubixifoxisobof-repofudupu-xafigeneni.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/17721531589.pdf
    • https://cdn.shopify.com/s/files/1/0431/6289/4485/files/kafugefiwe.pdf
    • https://cdn.shopify.com/s/files/1/0432/7761/5262/files/lokanalozelimalumudin.pdf
    • https://cdn.shopify.com/s/files/1/0432/1509/3924/files/96311605535.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/61927850068.pdf
    • https://cdn.shopify.com/s/files/1/0437/8198/0317/files/62608691012.pdf
    • https://cdn.shopify.com/s/files/1/0428/7440/5020/files/32566588196.pdf
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/pufebasufiguj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zafon.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1188956193.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20745245188.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_off00004662.bin
ce2adf96102a65223330a901de5486e615297628f6c2f6fcd726c7d6193a66b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4662 5036 bytes
font_01_sfnt_off00005795.bin
89a81b19fe200f5f1d1e903af7a9fcf20e927d638310214ad22cb5d09effa6b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5795 10688 bytes

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