Malicious PDF — malware analysis report

Static analysis result for SHA-256 f17c2cb1d39e6cbb…

MALICIOUS

PDF

55.8 KB Created: 2020-08-26 00:57:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a5eb1baa90a3a350d3536c996490b9e SHA-1: 2753749fa9ce790b0caaff547bd6f9b2bb55dc83 SHA-256: f17c2cb1d39e6cbb69106833dfb9e373d7ca138e0b0965ac95e01bf580dfaf0c
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic indicates that the document links to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL that leads to this redirector. The primary intent appears to be directing users to malicious content through a link farm.

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.club/pify?keyword=significado+trasero+de+telugu+palabr
    • http://kiwutig.naturalme4c.com/uploads/1/3/2/6/132681763/sepesepamulemi.pdf
    • http://lawufu.shadowcreekchoir.com/uploads/1/3/1/3/131381762/056378c.pdf
    • https://cdn.shopify.com/s/files/1/0435/0096/1947/files/tajujunoradubapibatax.pdf
    • https://cdn.shopify.com/s/files/1/0433/4980/3159/files/bootstrap_company_profile_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/1569/9621/files/38415315361.pdf
    • https://cdn.shopify.com/s/files/1/0433/1808/3742/files/biboxupad.pdf
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/diwagemadifowawuxugawava.pdf
    • https://cdn.shopify.com/s/files/1/0446/6160/4505/files/bkash_app_now.pdf
    • https://cdn.shopify.com/s/files/1/0437/6113/9861/files/69763668661.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/rowotaroginagowoze.pdf
    • https://cdn.shopify.com/s/files/1/0432/2027/1259/files/2001_chrysler_300m_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/7353/6161/files/faroluretitetelamesofo.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062cb.bin
19f80d48d4aeb38fda5f06c57c6fe7d55548e13b8725d16728af3ebd692440a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62CB 5568 bytes
font_01_sfnt_off000075a5.bin
78af26b92fbfa62fd27e31443660b3ee9467f7115f56c9bdd6e3a091957dfff1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75A5 8784 bytes
font_02_sfnt_off00008e72.bin
43f757010ee9c7dd141e020d5b5623d9137b49fdc748822bdb36bbfe28e21e64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E72 11320 bytes
font_03_sfnt_off0000b29c.bin
75e788ba36fbcef66777b3c74a9b4cab5834db64825472707fc2ed17c0f7f1b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB29C 18536 bytes

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