Malicious PDF — malware analysis report

Static analysis result for SHA-256 1feb925b3974ea61…

MALICIOUS

PDF

47.6 KB Created: 2020-08-09 06:26:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aca187b759c5ed798c61880c5c779b0b SHA-1: ff480ac2f9125a85aa40e7fec5bc2a34a9cee9e2 SHA-256: 1feb925b3974ea6177e98429b0301d32cd5e87ef85e8468dbcf075e2fa6181a7
150 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a high number of embedded links, many of which point to a redirector service. The document body contains text related to mathematical analysis and a URL that appears to be part of a link farm. The primary malicious URL identified is https://ttraff.com/pify?keyword=analyse+math%25C3%25A9matique+2+pdf, which is likely used to direct users to further malicious content.

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.com/pify?keyword=analyse+math%25C3%25A9matique+2+pdf
    • http://lezujoju.physicsfox.com/uploads/1/3/1/0/131070161/jawimawenapones_noviwepi_jupataxotazuwar_jawis.pdf
    • http://files.wookles.com/uploads/1/3/1/8/131858661/goduxi.pdf
    • http://files.memphistutorial.com/uploads/1/3/2/6/132682471/5550457.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15900382268.pdf
    • https://cdn.shopify.com/s/files/1/0439/5397/9550/files/346358411.pdf
    • https://cdn.shopify.com/s/files/1/0432/8026/9462/files/bulls_on_parade_guitar_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0437/5835/4584/files/convert_to_word_android_app.pdf
    • https://cdn.shopify.com/s/files/1/0434/8618/3576/files/84155492911.pdf
    • https://cdn.shopify.com/s/files/1/0433/9430/2117/files/43694536340.pdf
    • https://cdn.shopify.com/s/files/1/0431/9838/2242/files/80021823874.pdf
    • https://cdn.shopify.com/s/files/1/0428/0591/9903/files/75107388110.pdf
    • https://cdn.shopify.com/s/files/1/0438/2762/6134/files/32484063941.pdf
    • https://cdn.shopify.com/s/files/1/0431/2639/0933/files/watatizilunexokowemerabe.pdf
    • https://cdn.shopify.com/s/files/1/0435/1164/4324/files/hoover_turbo_scrub_spinscrub_50_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/3539/3191/files/68924728087.pdf
    • https://cdn.shopify.com/s/files/1/0430/6167/4133/files/wovex.pdf
    • https://cdn.shopify.com/s/files/1/0438/3378/6518/files/19113088111.pdf
    • https://cdn.shopify.com/s/files/1/0431/6479/5044/files/perigilebu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069cd.bin
29a86f22f5072883d746681a3711c3e12deaee7e45c2831207c285d704789407
pdf-font-stream PDF embedded font (sfnt) at offset 0x69CD 5448 bytes
font_01_sfnt_off00007be3.bin
e81be9fe7a4040c01a1d9ee4daa372eec29047d1fa14f3d299032fa6ad61d13e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE3 11492 bytes
font_02_sfnt_off0000a10a.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xA10A 4324 bytes