Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0819b67dd89bf94…

MALICIOUS

PDF

43.7 KB Created: 2020-08-02 04:13:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e34119cd81128b507f54130535370cf SHA-1: e9fe07a61866e34905f52895b700e2f3e8ab4335 SHA-256: d0819b67dd89bf94f01a6d0b11a19b60a4cc55323ab74bb2245745b5a01c7412
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded links, a technique often used in SEO link farms to manipulate search engine rankings or redirect users to malicious sites. One of the primary links points to a known malicious redirector. The document body contains garbled text but includes the URL 'https://ttraff.ru/pify?keyword=ryobi+4+cycle+trimmer', which is flagged as a malicious redirector.

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.ru/pify?keyword=ryobi+4+cycle+trimmer
    • http://files.bjorkartstudio.com/uploads/1/3/0/7/130775475/bilakokanagod.pdf
    • http://files.casabatsu.org/uploads/1/3/1/6/131637635/06d4e6081d2e9.pdf
    • http://files.venturecreationcafe.com/uploads/1/3/1/4/131453251/3603287.pdf
    • http://files.whitewarriorhealth.com/uploads/1/3/1/4/131437363/6272343.pdf
    • http://files.hiagodesena.com/uploads/1/3/1/4/131407818/buziwesapi-masajetuxadi.pdf
    • https://cdn.shopify.com/s/files/1/0431/9261/5073/files/21275957026.pdf
    • https://cdn.shopify.com/s/files/1/0432/8731/4585/files/guboredifudisexowim.pdf
    • https://cdn.shopify.com/s/files/1/0432/6490/1270/files/physics_james_walker_4th_edition_free.pdf
    • https://cdn.shopify.com/s/files/1/0448/3943/6449/files/erin_go_bragh_pronunciation.pdf
    • https://cdn.shopify.com/s/files/1/0431/8819/1396/files/jifukezukirisot.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nitupalakisotubawu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8095/files/47896586049.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17810153535.pdf
    • https://cdn.shopify.com/s/files/1/0429/5698/0377/files/51389487612.pdf
    • https://cdn.shopify.com/s/files/1/0433/1126/7990/files/8273172908.pdf
    • https://cdn.shopify.com/s/files/1/0431/8494/7357/files/78671499776.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45251784546.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_off00006dd5.bin
ed8d35780b84c986d6c3f09eb9270a33055e9150a5a098276efa7eddd56bc40c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD5 4892 bytes
font_01_sfnt_off00007e80.bin
5c3a224bf16870e3b5499eba2d99e2e3d23a1753cbdce9f6ebe6b92545170513		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E80 10472 bytes

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