Malicious PDF — malware analysis report

Static analysis result for SHA-256 4eb7b45e79201e8b…

MALICIOUS

PDF

84.8 KB Created: 2020-08-11 19:09:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: acc6e924e9507b9125a023317f6a79fa SHA-1: 8373b33e56a1e54d727ebd6f6bd054d80a5c8ff9 SHA-256: 4eb7b45e79201e8bca1226c7259067170779251906e0ccf496e1704cc88c9b8d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wb?keyword=phpmailer%20attachment%20tcpdf%20example'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, some hosted on Shopify. The document body also contains the malicious URL and a heuristic indicates a lure to execute commands in a shell context. The combination suggests a phishing or scam attempt.

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/wb?keyword=phpmailer%20attachment%20tcpdf%20example
    • http://fubepig.throughthewoods.net/uploads/1/3/1/6/131636725/deniluxaketo.pdf
    • http://files.kmfathletictherapy.com/uploads/1/3/1/0/131071129/jazabulu_mitadureruv_zelafuvasesod_zokaganoropebu.pdf
    • http://files.accountinglyceum.com/uploads/1/3/0/8/130813645/bujurotolaf-genopa.pdf
    • http://files.artsstudentsassociation.org/uploads/1/3/0/8/130814021/zasasiletupeve.pdf
    • https://cdn.shopify.com/s/files/1/0434/6819/3952/files/wenobegowopufi.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/c_programming_language_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/1055/4016/files/rogue_best_in_slot_classic.pdf
    • https://cdn.shopify.com/s/files/1/0438/6983/1323/files/adjective_phrase_worksheet_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/3504/9640/files/36274300971.pdf
    • https://cdn.shopify.com/s/files/1/0429/7054/6329/files/giwow.pdf
    • https://cdn.shopify.com/s/files/1/0435/4146/3204/files/31343848089.pdf
    • https://cdn.shopify.com/s/files/1/0434/2556/2791/files/bases_psicosociales_del_comportamiento_humano.pdf
    • https://cdn.shopify.com/s/files/1/0429/6173/1743/files/mivuxoxud.pdf
    • https://cdn.shopify.com/s/files/1/0431/9569/5265/files/2020_myanmar_census_report.pdf
    • https://cdn.shopify.com/s/files/1/0429/6825/2565/files/28290229543.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/kagenizip.pdf
    • https://cdn.shopify.com/s/files/1/0434/0505/0008/files/34392574742.pdf
    • https://cdn.shopify.com/s/files/1/0432/3636/0351/files/konodovamoge.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_off0000db96.bin
8f4f85140d7c4a7fbb5a6a029f39659b975b97a13a90805d8cef18f8b3502a71		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB96 4964 bytes
font_01_sfnt_off0000ec44.bin
fe798e7f5b3427a2d38187e58a999577425ab575344f1d8247f9d258e6dc44b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC44 17188 bytes
font_02_sfnt_off000121ce.bin
571515972335caee0a207269c24bbadeada6519823ccebd0cb96343cc03b563a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x121CE 16176 bytes
font_03_sfnt_off000136ef.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x136EF 4324 bytes

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