Malicious PDF — malware analysis report

Static analysis result for SHA-256 313412d28bde8e60…

MALICIOUS

PDF

45.4 KB Created: 2020-08-10 08:56:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f4f026e8c781c7222b6ab470eb55669 SHA-1: 53d0c351431d07446c374e2b6c08128fab1cda14 SHA-256: 313412d28bde8e601c548603db696d38624251621c745a4b4a404a4e9ca480d1
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=beatles+blackbird+tab+pdf'. This URL is embedded within the document body, suggesting a social engineering lure to trick the user into clicking it. The PDF also exhibits characteristics of a link farm, with numerous external links, further supporting a malicious intent to redirect users to potentially harmful sites.

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=beatles+blackbird+tab+pdf
    • http://fefol.goldenmountainlimo.com/uploads/1/3/1/4/131406082/suruwu-sutuma-xofil-wisiwi.pdf
    • http://files.massimilianogatti.com/uploads/1/3/1/3/131380871/ab3a4799439.pdf
    • http://kamona.bonescanoeandcampground.com/uploads/1/3/1/4/131409090/7509781.pdf
    • https://cdn.shopify.com/s/files/1/0429/5622/6716/files/43237467806.pdf
    • https://cdn.shopify.com/s/files/1/0433/6533/5190/files/19619621928.pdf
    • https://cdn.shopify.com/s/files/1/0437/1460/9303/files/93227265685.pdf
    • https://cdn.shopify.com/s/files/1/0433/6674/4220/files/72996594786.pdf
    • https://cdn.shopify.com/s/files/1/0431/3242/0264/files/sixeg.pdf
    • https://cdn.shopify.com/s/files/1/0429/2925/8649/files/lobirazopoxoxebiki.pdf
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/jufazixesovevawus.pdf
    • https://cdn.shopify.com/s/files/1/0430/8795/4073/files/reading_sentences_with_cvc_words.pdf
    • https://cdn.shopify.com/s/files/1/0428/6647/5164/files/wupizijaneresusufatavajak.pdf
    • https://cdn.shopify.com/s/files/1/0433/1434/8197/files/95657888303.pdf
    • https://cdn.shopify.com/s/files/1/0427/5362/2182/files/97211940189.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53295895336.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/1/0431/3242/0

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067e1.bin
8a85b80d2763aa70f5bf94ccb6324f0ccac2adf49f842bcabb11b30fd2e43257		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67E1 5404 bytes
font_01_sfnt_off00007a4c.bin
60238e8de308c6c93fc1e00e06ae60b5f2371c9d42f7519094f6c41bbf546372		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A4C 15004 bytes

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