Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f0951d00f34d037…

MALICIOUS

PDF

43.0 KB Created: 2020-08-09 06:09:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05a71d2e6ceec80e3e543a48af281892 SHA-1: 6ecaaf03820e011db72be68dc966776a11ff4932 SHA-256: 7f0951d00f34d037a55574ff281503a43cbd01b936cf3bd0139a43668306db3e
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, specifically pointing to 'https://ttraff.ru/pify?keyword=alexander+mcqueen+book+pdf'. This indicates a phishing or scam attempt, likely aiming to direct users to malicious content. The presence of numerous other external PDF links, many hosted on Shopify, suggests a link farm or SEO manipulation tactic to improve search engine visibility for the malicious content. The ML classifier also strongly flagged this PDF as malicious.

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=alexander+mcqueen+book+pdf
    • http://pewaxawi.newyork-homeinspections.com/uploads/1/3/2/8/132814930/4614045.pdf
    • http://files.domegaiacommunities.com/uploads/1/3/0/7/130739343/mutedozu.pdf
    • http://files.aztecag.com/uploads/1/3/1/4/131437161/3dfe7affce82d1.pdf
    • http://files.jodisandfort.org/uploads/1/3/1/6/131607374/dewuzepu-toxufejatox-jafifuwudifo.pdf
    • http://zufep.jenniferwleighton.com/uploads/1/3/1/3/131398455/20ff757b4.pdf
    • https://cdn.shopify.com/s/files/1/0431/1495/4908/files/55209466197.pdf
    • https://cdn.shopify.com/s/files/1/0436/0175/6323/files/banopo.pdf
    • https://cdn.shopify.com/s/files/1/0439/5512/6430/files/microsoft_excel_course_outline.pdf
    • https://cdn.shopify.com/s/files/1/0433/4410/1544/files/49814849134.pdf
    • https://cdn.shopify.com/s/files/1/0439/3422/0456/files/autobiography_sample.pdf
    • https://cdn.shopify.com/s/files/1/0436/5778/9593/files/fepexesalogatebabijagite.pdf
    • https://cdn.shopify.com/s/files/1/0429/0917/1879/files/69490469387.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/74174794581.pdf
    • https://cdn.shopify.com/s/files/1/0431/2429/3794/files/75644982920.pdf
    • https://cdn.shopify.com/s/files/1/0434/8506/9477/files/58092904044.pdf
    • https://cdn.shopify.com/s/files/1/0437/6661/2130/files/99298377930.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_off000068fd.bin
d7962c1e6dba45c61e066981ba262a1c51e315ecafac2706a8608835d70e9d3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68FD 5512 bytes
font_01_sfnt_off00007ba6.bin
4c66c2f2382baf032b1f95b64ef6b7d59249d8f665bcf8cd557409f228d8691e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA6 10552 bytes

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