Malicious PDF — malware analysis report

Static analysis result for SHA-256 a386ab22ad153ce9…

MALICIOUS

PDF

120.9 KB Created: 2020-08-05 22:49:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77664673b8c0c80f2cdd5b053a66cc40 SHA-1: 79f6016c1a03cf6dfd9d95a7fdf1ac40e3d7e0ce SHA-256: a386ab22ad153ce980a80970c95655e5c1de414a8481f28baff7d1b437e8f262
120 Risk Score

Malware Insights

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

The PDF file contains multiple links, with one critical heuristic identifying it as a malicious redirector. The primary embedded URL, https://ttraff.com/pify?keyword=caida+del+imperio+romano+de+occidente+pdf, is flagged as malicious. Another heuristic indicates a PDF link farm, with https://cdn.shopify.com/s/files/1/0429/9977/5381/files/lulefebi.pdf being the first URL in this farm. The document body, though heavily obfuscated, contains the malicious URL, suggesting a lure to a malicious site.

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.com/pify?keyword=caida+del+imperio+romano+de+occidente+pdf
    • http://files.theriverhouseblog.com/uploads/1/3/1/4/131437756/aaa9cabf.pdf
    • http://files.boerneamlegion.org/uploads/1/3/2/6/132696048/6086771.pdf
    • http://files.josephgoff.com/uploads/1/3/0/8/130814644/ec9bb2b1ad19.pdf
    • http://files.tellncallmobile2u.com/uploads/1/3/1/4/131453967/xamidorukupow-doderofokurevan-dejedus.pdf
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/lulefebi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7362/5500/files/1998_ford_f150_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/9345/1159/files/pitanasirewowoj.pdf
    • https://cdn.shopify.com/s/files/1/0440/4409/1557/files/gojunoralol.pdf
    • https://cdn.shopify.com/s/files/1/0438/8945/9368/files/acuerdo_de_paris_onu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5987/9834/files/18312398587.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22511335110.pdf
    • https://cdn.shopify.com/s/files/1/0429/1559/4393/files/3842807996.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27392185694.pdf
    • https://cdn.shopify.com/s/files/1/0430/9221/3911/files/tratamento_fisioterapeutico_hernia_de_disco_lombar.pdf
    • https://cdn.shopify.com/s/files/1/0436/1525/6738/files/junofasogonebusaregu.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_off00019d26.bin
469246beeddf7a40a430775b800039094bfcb10b67935033dfa89338af9e2ed6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19D26 5028 bytes
font_01_sfnt_off0001ae2c.bin
9dd3d774f3d6c174a98cfe22be9b7a80c4cdf5cdf0e874240cf503437ba27d16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1AE2C 11656 bytes

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