Malicious PDF — malware analysis report

Static analysis result for SHA-256 e04141d2cfc41db5…

MALICIOUS

PDF

54.9 KB Created: 2020-08-27 20:27:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3a3ab7fd3dd9048b9f01489c88c3ed9 SHA-1: e75442071dec7423de3d1c39ca31c4bc391217cd SHA-256: e04141d2cfc41db548878226c77f1eb9dd383664b69e802ac33363aeecce2405
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=don+t+starve+together+cracked+multip'. It also exhibits a PDF link farm heuristic, with many links pointing to Shopify domains, one of which is 'https://cdn.shopify.com/s/files/1/0434/7746/7288/files/tilexafadoxiwafilurujojib.pdf'. The document body contains text related to 'don t starve together cracked multip' and a call-to-action phrase, suggesting a lure for pirated software or a game, which is further supported by the malicious redirector.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=don+t+starve+together+cracked+multip
    • http://files.wonderfulpowerfulme.com/uploads/1/3/1/8/131871721/03ba0e507f69b.pdf
    • http://xidixe.terigarrett.org/uploads/1/3/0/7/130776499/4074a27b45a061.pdf
    • https://cdn.shopify.com/s/files/1/0434/7746/7288/files/tilexafadoxiwafilurujojib.pdf
    • https://cdn.shopify.com/s/files/1/0431/0827/0244/files/kepisifefiliduzaseniz.pdf
    • https://cdn.shopify.com/s/files/1/0437/0602/4090/files/munibuvitalasifid.pdf
    • https://cdn.shopify.com/s/files/1/0440/0247/6190/files/jajazoruvene.pdf
    • https://cdn.shopify.com/s/files/1/0437/7991/5937/files/cb550_wiring_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0437/1854/1480/files/agribusiness_in_kenya.pdf
    • https://cdn.shopify.com/s/files/1/0431/6214/0826/files/6692211484.pdf
    • https://cdn.shopify.com/s/files/1/0441/4016/7320/files/kejexese.pdf
    • https://cdn.shopify.com/s/files/1/0459/9401/6935/files/gufomazepobexe.pdf
    • https://cdn.shopify.com/s/files/1/0434/9257/3336/files/pdf_to_word_converter_offline_setup_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/1773/8152/files/18487867789.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
stream_006_off0000a1a6.bin
99de40d03a283d97a8aa2e927ce6a3c5fc893d825440d87a2bfed49c6eee1ae6
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xA1A6 25784 bytes
font_00_sfnt_off0000611e.bin
9a92b8143779ddac89a8f804f21b6802925aeb38794a67da24b126c358f45ea1
pdf-font-stream PDF embedded font (sfnt) at offset 0x611E 5612 bytes
font_01_sfnt_off00007403.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
pdf-font-stream PDF embedded font (sfnt) at offset 0x7403 1800 bytes
font_02_sfnt_off00007c90.bin
04fbdd88b0fb8d47f11c15575f04d6b4b8ab066974835aff650069c93e7c86ac
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C90 10808 bytes