Malicious PDF — malware analysis report

Static analysis result for SHA-256 36236d58e6c1663f…

MALICIOUS

PDF

35.0 KB Created: 2020-08-14 16:09:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da02f9613d3b40365b3cb0b9ac8e45e8 SHA-1: 7f2a33e4fe0b23a095e3338520ce5fbec07e9851 SHA-256: 36236d58e6c1663f4a6ec311affbab70db6d7cd1973aca459423f7a1833421f9
152 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, many of which point to a link farm hosted on cdn.shopify.com. One of the embedded links, https://ttraff.cc/pify?keyword=macbeth+act+2+test+pdf, is identified as a known malicious redirector. This suggests the PDF is designed to lure users into clicking malicious links, potentially leading to further compromise.

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=macbeth+act+2+test+pdf
    • http://files.eastwinchester.org/uploads/1/3/0/7/130740078/kozat.pdf
    • http://files.msullivanart.com/uploads/1/3/0/8/130814121/8455114.pdf
    • http://piworizo.lisakerriganmichel.com/uploads/1/3/0/8/130873790/d140815eb.pdf
    • http://wuzosi.limoservicealbany.com/uploads/1/3/1/0/131070493/pugez-pikipasip.pdf
    • https://cdn.shopify.com/s/files/1/0431/1682/2692/files/garolubur.pdf
    • https://cdn.shopify.com/s/files/1/0435/4660/7784/files/89200797570.pdf
    • https://cdn.shopify.com/s/files/1/0439/4044/6366/files/8392739942.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13002849425.pdf
    • https://cdn.shopify.com/s/files/1/0437/4393/6673/files/fokigefobawupokubeku.pdf
    • https://cdn.shopify.com/s/files/1/0432/0319/9136/files/77253999407.pdf
    • https://cdn.shopify.com/s/files/1/0441/3220/4696/files/wunogan.pdf
    • https://cdn.shopify.com/s/files/1/0432/5038/5051/files/faxamifuduv.pdf
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/lolaxineragojisumonor.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_off000046dd.bin
6a72d1462ed57b248878ca520b0d9114a077d94de8c595f41529ed68a7ad1b3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x46DD 5392 bytes
font_01_sfnt_off00005936.bin
297659a7af42180df1fe9e7fa494fc897abadf8a5cd243f2d9fa8e1a7e01f221
pdf-font-stream PDF embedded font (sfnt) at offset 0x5936 11864 bytes