Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac54e79e7ea623b4…

MALICIOUS

PDF

49.1 KB Created: 2020-07-19 04:53:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75d9d402e676290f44779b45e3204e15 SHA-1: 6ede7be69adb081bf4ab6c6f07cf768d1760a490 SHA-256: ac54e79e7ea623b4742f9679ae649fc9e40672dd8f5dd006998f710341112f21
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.ru. This indicates the document's primary purpose is to lure the user to a malicious site. Additionally, a PDF link farm heuristic was triggered, suggesting a broader campaign to distribute malicious content. No scripts were extracted, but the embedded URL is sufficient evidence for the attack pattern.

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/wb?keyword=obc%20caste%20form%20pdf%20rajasthan
    • http://files.modishknits.com/uploads/1/3/1/3/131382395/dokotedezimolew_zapixobab_fuwuwezefi_pefowabetatis.pdf
    • http://files.bonneygirlphotography.com/uploads/1/3/2/6/132681204/sapoxorufewodod.pdf
    • http://files.amyryan.net/uploads/1/3/1/4/131406510/b71770beb8a.pdf
    • http://files.downersgrovecpr.com/uploads/1/3/1/4/131452959/9bbe867d9.pdf
    • http://files.amyryan.net/uploads/1/3/1/4/13
    • https://cdn.shopify.com/s/files/1/0429/4744/4899/files/68250984390.pdf
    • https://cdn.shopify.com/s/files/1/0429/5314/6517/files/mawozuzuduzu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5809/4495/files/fodutogobupukuz.pdf
    • https://cdn.shopify.com/s/files/1/0437/1054/6070/files/jebifob.pdf
    • https://cdn.shopify.com/s/files/1/0430/1550/4029/files/9781050597.pdf
    • https://lawikisuj.files.wordpress.com/2020/06/50964004751.pdf
    • https://sakadukil.files.wordpress.com/2020/06/zamisikokikuzab.pdf
    • https://sudibumoz.files.wordpress.com/2020/07/koperakuxoxekapevezof.pdf
    • https://cdn.shopify.com/s/files/1/0434/9244/2264/files/37558120076.pdf
    • https://cdn.shopify.com/s/files/1/0430/6678/5949/files/31828736261.pdf
    • https://cdn.shopify.com/s/files/1/0429/9807/1449/files/rafuzinebejafup.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lavijado.pdf
    • https://cdn.shopify.com/s/files/1/0432/8397/2256/files/mopobuwedilagu.pdf
    • https://cdn.shopify.com/s/files/1/0432/9422/8630/files/remixejotifolufer.pdf
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/dimelezubidudujoga.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57790570823.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_off00007270.bin
cb7f7666eb9da14ec290cc59fa0c99da4c1dc1a005d8b5463ee710f566b01acc
pdf-font-stream PDF embedded font (sfnt) at offset 0x7270 5348 bytes
font_01_sfnt_off0000846c.bin
fdd0bc2791db2b24c5b2b2bba4ccc0d4654f9de23dea0f4cfa5bd808ed2fa4a2
pdf-font-stream PDF embedded font (sfnt) at offset 0x846C 10332 bytes
font_02_sfnt_off0000a7eb.bin
65dbab8bfa6e8e0a0a39f55a07201a4db97c1174be1deac3f5b2c5479ea04b50
pdf-font-stream PDF embedded font (sfnt) at offset 0xA7EB 4180 bytes