Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3c127ca77fc6abb…

MALICIOUS

PDF

48.5 KB Created: 2020-07-30 20:53:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: db8d28ffa01d81b37c5edd02c92cc33b SHA-1: d494153ee5507ef92d80ed813969c39c04fa496e SHA-256: e3c127ca77fc6abb76635d1801bd04ab17a53390b054c6844cb827d42e6ecca3
152 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.cc/pify?keyword=a+critical+and+cultural+theory+reader+pdf'. This indicates the document's primary purpose is to lure users to a malicious site. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, many of which are hosted on Shopify. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=a+critical+and+cultural+theory+reader+pdf
    • http://files.kimtarrestaurant.com/uploads/1/3/0/7/130776592/85648508a87a23.pdf
    • http://files.skyesthelimitphotography.com/uploads/1/3/0/8/130815026/9962355.pdf
    • http://files.hartsvillemasons547.com/uploads/1/3/1/4/131454373/xozujumi_lilafona_tubuluzo_nogutijugebikox.pdf
    • http://files.ausoutdooredu.com/uploads/1/3/2/7/132712306/ece9fc.pdf
    • http://files.hartsvillemasons547
    • https://cdn.shopify.com/s/files/1/0434/9467/0498/files/91946959755.pdf
    • https://cdn.shopify.com/s/files/1/0437/8640/4000/files/milawikusupobi.pdf
    • https://cdn.shopify.com/s/files/1/0428/1561/9239/files/biveluvodexusabuzudogagum.pdf
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/zalasidatuwolagidasog.pdf
    • https://cdn.shopify.com/s/files/1/0434/1356/9687/files/zemefizapir.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zebegevuda.pdf
    • https://cdn.shopify.com/s/files/1/0428/2348/3548/files/kepewewoje.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/47878122177.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gubiwunezekubukezo.pdf
    • https://cdn.shopify.com/s/files/1/0437/8882/8829/files/nuxuda.pdf
    • https://cdn.shopify.com/s/files/1/0430/9932/4580/files/kenapage.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37394074323.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_off000080b4.bin
d690d7e7f5c19b75e3ced0dd78df5b282cec3230540395abfcd41ac101d32314		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80B4 5040 bytes
font_01_sfnt_off000091cd.bin
11c72ad740c72eaba0bcca1140530b63418fa9e03503acfcfea4db08f25e30e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91CD 10176 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.