Malicious PDF — malware analysis report

Static analysis result for SHA-256 56d4d575e3e5db06…

MALICIOUS

PDF

35.6 KB Created: 2020-08-28 00:51:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81dad1f4fb535c06a9f7b52b5fd1f3e5 SHA-1: a3bf44c651f968b8a819521d7fe6684599087c8d SHA-256: 56d4d575e3e5db06d23fcb436c898ed346ca032e28bd09e5ff94aa4b7548c573
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many pointing to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=imprimir+regla+de+papel'. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted from this sample.

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=imprimir+regla+de+papel
    • http://files.lightofchristgarden.org/uploads/1/3/1/6/131637953/9c4d074fd2f40.pdf
    • http://papepij.jae-k.com/uploads/1/3/0/7/130738970/1579294.pdf
    • https://cdn.shopify.com/s/files/1/0429/2280/3366/files/bifazezuziverelonunemofak.pdf
    • https://cdn.shopify.com/s/files/1/0428/2282/8198/files/53823264699.pdf
    • https://cdn.shopify.com/s/files/1/0434/3191/9765/files/77393554508.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94448736580.pdf
    • https://cdn.shopify.com/s/files/1/0431/6338/6017/files/barreras_de_la_comunicacion_psicologicas.pdf
    • https://cdn.shopify.com/s/files/1/0435/5925/6232/files/buck_converter_input_current_waveform.pdf
    • https://cdn.shopify.com/s/files/1/0437/7473/8586/files/vulikinovonepunujurivew.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/54313135065.pdf
    • https://cdn.shopify.com/s/files/1/0438/6009/9222/files/63676415302.pdf
    • https://cdn.shopify.com/s/files/1/0452/2465/7056/files/arduino_c_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0427/7351/2359/files/jasusadijine.pdf
    • https://cdn.shopify.com/s/files/1/0431/5856/9128/files/88560431286.pdf
    • https://cdn.shopify.com/s/files/1/0433/5799/5160/files/milefoke.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_off00004c4a.bin
408f79b2935640fca9abb6623ead078c7e817fb8f52eea9d8a151aee093b12ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C4A 5036 bytes
font_01_sfnt_off00005d4d.bin
63eee79ce4346a79f3f5f23a0a4645e187b54d62612a04b5d1d76c4e0f5da711		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D4D 11220 bytes

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