Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e072d01703fb046…

MALICIOUS

PDF

37.9 KB Created: 2020-08-19 14:08:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 928e2d9478d2f9780aff71c9a893ea52 SHA-1: 62b66834f6164207dd0a8eba4c315867d54df04a SHA-256: 1e072d01703fb046c4d8be7df1e37b95aa9cf5c5ef24919b344bbbc7537fa216
120 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 'ttraff.cc'. This URL is presented within the document body, disguised as a 'proxy voting form template uk'. The PDF also contains a large number of external links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic to distribute the malicious URL. The primary malicious IOC is the redirector URL.

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/pify?keyword=proxy+voting+form+template+uk
    • http://files.klarastefano.com/uploads/1/3/2/6/132695582/xexalig_runosurikazuvo_puted_mimenoru.pdf
    • http://nanunalut.andrewjkeir.net/uploads/1/3/1/3/131380600/451215.pdf
    • http://files.mtbwithstacy.com/uploads/1/3/1/3/131398131/190416.pdf
    • http://files.scottsdalecwrt.org/uploads/1/3/0/7/130739883/kuzivevorazimojalapo.pdf
    • http://files.katherinemayleon.com/uploads/1/3/1/8/131856446/difimiguvememil.pdf
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/femewejo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71895612735.pdf
    • https://cdn.shopify.com/s/files/1/0438/8945/9368/files/barebulom.pdf
    • https://cdn.shopify.com/s/files/1/0430/6878/4791/files/femaruba.pdf
    • https://cdn.shopify.com/s/files/1/0430/6488/5402/files/23679259277.pdf
    • https://cdn.shopify.com/s/files/1/0428/3095/4655/files/pizaxudezevikigupola.pdf
    • https://cdn.shopify.com/s/files/1/0465/1411/0614/files/fidetulejisonategos.pdf
    • https://cdn.shopify.com/s/files/1/0441/0851/3432/files/64419051428.pdf
    • https://cdn.shopify.com/s/files/1/0428/6673/7311/files/piludilatikepet.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_off00004aeb.bin
e7260a0883c6f751845275f29af49c08902468c4f83e415578b3655ec0387ffc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AEB 5220 bytes
font_01_sfnt_off00005ca6.bin
c2f56f87c50b5cfc052d43b354033fb9aff548d5473112502565d15a8b7cafb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CA6 9364 bytes
font_02_sfnt_off00007ca2.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CA2 4324 bytes

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