Malicious PDF — malware analysis report

Static analysis result for SHA-256 57ef0bf80222f4fd…

MALICIOUS

PDF

47.4 KB Created: 2020-08-07 10:24:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e107e02303127e67938785190e4329a SHA-1: f3e1d8d7b061343e15620615cb62dfbda4a5d528 SHA-256: 57ef0bf80222f4fd596694d2cbee87118f73e4b4869e33b666a45e560f9e75ec
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.cc'. The document body, though heavily obfuscated, contains the text 'Alternity player's handbook pdf download' and the malicious URL, suggesting a lure to download a fake PDF. The presence of numerous links and the redirector indicates a link farm or SEO poisoning technique to distribute malicious content.

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.cc/wb?keyword=alternity%20player
    • http://files.booksyoucantrust.com/uploads/1/3/1/4/131452840/wotarigaladugog_milonikobul_mosulosaburavux_zumelafoto.pdf
    • http://files.luisarciniega.org/uploads/1/3/0/8/130813427/giwuna.pdf
    • http://kabeje.ancientwavestudios.com/uploads/1/3/0/7/130776257/84290.pdf
    • http://files.canadianculinaryinstitute.ca/uploads/1/3/1/3/131398406/76cbb0cde.pdf
    • http://files.aniareynolds.com/uploads/1/3/2/8/132816042/97e76524110858.pdf
    • https://cdn.shopify.com/s/files/1/0431/8537/3333/files/76522476404.pdf
    • https://cdn.shopify.com/s/files/1/0434/6321/3209/files/69440686583.pdf
    • https://cdn.shopify.com/s/files/1/0432/8855/9780/files/70277414398.pdf
    • https://cdn.shopify.com/s/files/1/0437/6877/4807/files/70191106542.pdf
    • https://cdn.shopify.com/s/files/1/0431/0722/1658/files/wisepalenijufigakisosel.pdf
    • https://cdn.shopify.com/s/files/1/0430/8510/3258/files/43484671151.pdf
    • https://cdn.shopify.com/s/files/1/0429/2873/4367/files/kalender_2020_bw.pdf
    • https://cdn.shopify.com/s/files/1/0433/9708/7390/files/chemistry_test_book.pdf
    • https://cdn.shopify.com/s/files/1/0437/6972/5085/files/70715088504.pdf
    • https://cdn.shopify.com/s/files/1/0434/3896/4903/files/xixemaxujazofanarikuwa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/97716097399.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_off00006bc8.bin
33efa217833940434c324857b6658831ed7eb0813c195a7816f0d619c2b7af19
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC8 5336 bytes
font_01_sfnt_off00007dea.bin
108bf3389279eeaebc87c50d1ba88063183af85ea6dd0bf03dd6aac8eb0e4db5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DEA 10584 bytes
font_02_sfnt_off0000a224.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xA224 4324 bytes