Malicious PDF — malware analysis report

Static analysis result for SHA-256 e503c94551485016…

MALICIOUS

PDF

42.5 KB Created: 2020-08-13 22:53:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c9f4cae17462fe0f11b8ff3f336b485 SHA-1: de674d1afe971f598f7bf21ca45aa45f1b0a9589 SHA-256: e503c94551485016254e14a79c199a7e46558b4b3fcfb5760ae8f8ee0a5f239c
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm designed to improve search engine rankings. One of these links, 'https://ttraff.cc/pify?keyword=punjabi+couple+wallpaper++full+hd', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, suggesting the primary intent is to redirect users to malicious infrastructure under the guise of providing wallpaper content.

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=punjabi+couple+wallpaper++full+hd
    • http://files.thehangaruk.co.uk/uploads/1/3/0/7/130739214/figedatorilitef.pdf
    • http://files.penny-funeralcelebrant.co.uk/uploads/1/3/1/0/131070911/609411.pdf
    • http://files.ccmun.ca/uploads/1/3/1/0/131071252/zelajipil-xatewix.pdf
    • http://files.joannebarsanti.com/uploads/1/3/2/6/132681698/7116497.pdf
    • http://files.cre8tivemarketingagency.com/uploads/1/3/1/8/131871659/xudukenedex.pdf
    • https://cdn.shopify.com/s/files/1/0430/1219/4463/files/anjali_anjali_pushpanjali_instrumental_song.pdf
    • https://cdn.shopify.com/s/files/1/0427/9071/5548/files/sirezazafijurosilonaze.pdf
    • https://cdn.shopify.com/s/files/1/0437/7516/4574/files/young_jeezy_instagram.pdf
    • https://cdn.shopify.com/s/files/1/0437/3702/2615/files/14289260196.pdf
    • https://cdn.shopify.com/s/files/1/0430/5669/3397/files/98127106322.pdf
    • https://cdn.shopify.com/s/files/1/0428/7057/1174/files/xonekomezeru.pdf
    • https://cdn.shopify.com/s/files/1/0433/2892/9960/files/28675096387.pdf
    • https://cdn.shopify.com/s/files/1/0433/3069/9414/files/bayesian_statistics_and_marketing_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/7237/3411/files/28852199067.pdf
    • https://cdn.shopify.com/s/files/1/0440/3258/9989/files/93170894421.pdf
    • https://cdn.shopify.com/s/files/1/0432/1935/3767/files/optical_encoder_arduino.pdf
    • https://cdn.shopify.com/s/files/1/0446/6167/0051/files/disputing_irrational_beliefs.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_off00005c74.bin
91a1524d63c9c4df519c8e288f7825c0e3b53e7b3bb4049adcaca34b16bd99f4
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C74 5372 bytes
font_01_sfnt_off00006eb8.bin
c84d63454065a35d8a6bbc2b8fa881e12d753addfb444cc0d95321d10fd1f5be
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB8 14932 bytes