Malicious PDF — malware analysis report

Static analysis result for SHA-256 33d45f96ab4cb912…

MALICIOUS

PDF

43.0 KB Created: 2020-10-17 12:47:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71556a3d0736221df30a350e0a7dab5a SHA-1: 15669910a3dce3c54e511934de78b4235e727a33 SHA-256: 33d45f96ab4cb912d34d3a82fbb4ec611abf36508355629451cc0cec6a06397e
120 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.club/123?keyword=sight+reading+guitar+book+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The document body, though heavily obfuscated, contains the same redirector URL. The primary attack vector appears to be social engineering via a seemingly legitimate PDF download lure, leading to malicious infrastructure.

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.club/123?keyword=sight+reading+guitar+book+pdf
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/aa94aa7f99c.pdf
    • https://disaxugotusineg.weebly.com/uploads/1/3/1/8/131871710/6088302.pdf
    • https://redunexodozik.weebly.com/uploads/1/3/0/8/130814050/3379728.pdf
    • https://riragojefo.weebly.com/uploads/1/3/1/8/131857115/5460038.pdf
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/vuwejij.pdf
    • https://folukufisika.weebly.com/uploads/1/3/1/3/131384255/fomado.pdf
    • https://cdn.shopify.com/s/files/1/0480/4975/0175/files/vevokobibivuzozemobul.pdf
    • https://cdn.shopify.com/s/files/1/0496/6334/4789/files/valikarujisasuf.pdf
    • https://cdn.shopify.com/s/files/1/0486/0752/7077/files/gurgaon_metro_map.pdf
    • https://cdn.shopify.com/s/files/1/0440/8036/5733/files/mozifunigujowirigudo.pdf
    • https://cdn.shopify.com/s/files/1/0268/7418/3853/files/all_korean_verbs.pdf
    • https://cdn.shopify.com/s/files/1/0503/8309/3910/files/joniravefunetawake.pdf
    • https://cdn.shopify.com/s/files/1/0429/0638/6595/files/laura_van_ryn_obituary.pdf
    • https://cdn.shopify.com/s/files/1/0501/5679/8114/files/neural_network_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0431/8376/7713/files/nezawudewonuzulex.pdf
    • https://cdn.shopify.com/s/files/1/0429/1746/2182/files/10662699906.pdf
    • https://cdn.shopify.com/s/files/1/0495/4714/9464/files/lupadusavuwituwej.pdf
    • https://cdn.shopify.com/s/files/1/0483/8087/0809/files/dividing_rational_expressions_worksheet_doc.pdf
    • https://cdn.shopify.com/s/files/1/0433/8217/7946/files/pedik.pdf
    • https://cdn.shopify.com/s/files/1/0433/2870/0571/files/calculating_mole_fraction.pdf
    • https://cdn.shopify.com/s/files/1/0499/7290/4088/files/worksheet_systems_of_equations_graphing.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/
    • https://cdn.shopify.com/s/files/1/0433/8217/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b46.bin
8604b0fafa6969e3bf4802fc7554edb51f8da70296e7b02022dad9e4842f9736
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B46 5400 bytes
font_01_sfnt_off00007d8d.bin
a33ee41184717e64282a3ec0fc8551a51f59e4093ceb9b25463d143b633cf576
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D8D 9656 bytes