Malicious PDF — malware analysis report

Static analysis result for SHA-256 90677e6139166f33…

MALICIOUS

PDF

42.1 KB Created: 2020-08-01 13:49:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 350881fadbcba870aef01504c0173142 SHA-1: 373f006ebbb06eacc69db179c4463a1f00f9e514 SHA-256: 90677e6139166f3333ef78c7b48fc1c7ff4fadc94c5a82c458f9fdf767e88844
160 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, including a known malicious redirector at ttraff.com. The heuristic firings indicate a malicious redirector and a link farm, suggesting the primary purpose is to direct users to potentially harmful sites. The presence of a visible LOLBin command execution instruction further supports malicious intent, likely for downloading or executing further payloads.

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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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/pify?keyword=serve+it+up+trey+songz
    • http://files.birthbabiesbeyond.com/uploads/1/3/0/7/130739949/fcfc17e.pdf
    • http://files.trentsoyster.com/uploads/1/3/0/8/130813314/mawozozozidab-nujepemedo-xegubomos.pdf
    • http://files.leaannlewis.net/uploads/1/3/0/7/130775362/7185956.pdf
    • http://files.remotecmd.com/uploads/1/3/0/9/130969918/maribez-kamuridabo-zopibanaw-pikobo.pdf
    • http://files.fit4fun13.com/uploads/1/3/2/6/132696598/2407491.pdf
    • https://cdn.shopify.com/s/files/1/0440/7531/9448/files/nulunolalajaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fofigez.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63537272249.pdf
    • https://cdn.shopify.com/s/files/1/0434/9100/0472/files/ruwaxakoguga.pdf
    • https://cdn.shopify.com/s/files/1/0429/5717/6986/files/rubikenejemijugulijelun.pdf
    • https://cdn.shopify.com/s/files/1/0431/9910/3136/files/28861719685.pdf
    • https://cdn.shopify.com/s/files/1/0436/4691/0624/files/99273096555.pdf
    • https://cdn.shopify.com/s/files/1/0437/7467/3050/files/12852862994.pdf
    • https://cdn.shopify.com/s/files/1/0433/0792/5654/files/50857879068.pdf
    • https://cdn.shopify.com/s/files/1/0436/4340/4441/files/73119494849.pdf
    • https://cdn.shopify.com/s/files/1/0438/2559/4530/files/18473929450.pdf
    • https://cdn.shopify.com/s/files/1/0431/9435/1778/files/46304547427.pdf
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/davizejuzakadu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000604d.bin
8afdc46995e564941643efdbfab6572e3fb8b3823417a987504f5fe287230379
pdf-font-stream PDF embedded font (sfnt) at offset 0x604D 5060 bytes
font_01_sfnt_off000071ad.bin
0b1342e3aa192b4034008501d61b1ea986f7ae0793fe593913038dfb20006ab8
pdf-font-stream PDF embedded font (sfnt) at offset 0x71AD 13484 bytes