Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9e209d65d37c81b…

MALICIOUS

PDF

43.2 KB Created: 2020-08-24 03:19:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c4cd9a184cda73fe378994e77d0e252 SHA-1: 88dd471930a47132d8bd6983493d45fcb98be1de SHA-256: e9e209d65d37c81b5276601d869f1ca6d8cab588a5d2bef8fb25077fb1846e43
120 Risk Score

Malware Insights

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

The PDF document contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=bursaries+for+bcom+informatics'. Additionally, it exhibits a PDF link farm, with many links pointing to Shopify domains, suggesting an attempt to obscure the final malicious destination. The document body, though partially corrupted, contains the same keyword as the redirector URL, indicating a lure to encourage clicks. No scripts were extracted from this sample.

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=bursaries+for+bcom+informatics
    • http://mumuji.autoservicearlingtontx.com/uploads/1/3/0/7/130775169/vaxobojox-kixirek-sazuse.pdf
    • http://riteminet.masterlimstkd.com/uploads/1/3/0/7/130738943/4459328.pdf
    • http://files.leesteadmanwelding.fr/uploads/1/3/0/7/130740443/sujebelavapa_jejusotevoxexu_rexigobiwina.pdf
    • http://relok.cozmoblack.com/uploads/1/3/1/4/131453870/7742451.pdf
    • https://cdn.shopify.com/s/files/1/0429/8709/4179/files/notalisorodovofudulebe.pdf
    • https://cdn.shopify.com/s/files/1/0427/7963/9967/files/13575625180.pdf
    • https://cdn.shopify.com/s/files/1/0434/0629/5201/files/pikajinibimuvazu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3329/7058/files/foxejuwasujexurexi.pdf
    • https://cdn.shopify.com/s/files/1/0455/7878/0837/files/apertura_a_la_experiencia.pdf
    • https://cdn.shopify.com/s/files/1/0428/7404/4579/files/baraguxifizifinezorupom.pdf
    • https://cdn.shopify.com/s/files/1/0431/9703/8756/files/simplicity_sewing_book.pdf
    • https://cdn.shopify.com/s/files/1/0439/5122/7038/files/xelitivev.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xoxolesusoziviro.pdf
    • https://cdn.shopify.com/s/files/1/0434/1818/9980/files/20530743477.pdf
    • https://cdn.shopify.com/s/files/1/0434/4935/2349/files/60858869944.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9874/files/java_bank_account_code.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_off00005ed7.bin
21272a45af60dc66702ffdfd2aae916331dd811b01272a7fad79208d6507a0ee
pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED7 5068 bytes
font_01_sfnt_off00006ff6.bin
5f4b32f49840ea650b5522051834909076db890b7b506d00ceae8c9aafd9cc09
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF6 9848 bytes
font_02_sfnt_off000091ac.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x91AC 4324 bytes