Malicious PDF — malware analysis report

Static analysis result for SHA-256 d701a5ee258795f6…

MALICIOUS

PDF

35.8 KB Created: 2020-07-08 19:06:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5da4a65dbfdfe9437f6a8f8834e6701f SHA-1: 178990c9bd569b1971b6bc18b2f7460df2e8acb4 SHA-256: d701a5ee258795f6c2e2d88d8d01b08f20e4d7e3e9254843bcbeb420636b36db
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to known malicious redirector infrastructure. The document body text and embedded links suggest a lure related to merging PDF files, likely to trick users into clicking malicious URLs. The primary malicious URL identified is https://ttraff.com/wb?keyword=merge%20multiple%20pdf%20file%20into%20one%20online.

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.com/wb?keyword=merge%20multiple%20pdf%20file%20into%20one%20online
    • http://files.mosimannlab.com/uploads/1/3/1/6/131606231/04d2d0.pdf
    • http://files.ncam.ac.nz/uploads/1/3/0/7/130776788/a94fe6a1c2f25a.pdf
    • http://files.beitnachum.org/uploads/1/3/1/4/131483253/ximegigojepirez_rabisosip_suwupisi.pdf
    • http://files.sbcopywriting.com/uploads/1/3/2/7/132740218/644292.pdf
    • http://files.seizediem.com/uploads/1/3/1/4/131438741/vewim_gifesimefipotu.pdf
    • http://files.well-estar.com/uploads/1/3/1/6/131637034/91a0067.pdf
    • http://files.stergiongroup.com/uploads/1/3/2/7/132740398/4599498.pdf
    • http://files.krabidream.com/uploads/1/3/2/6/132681566/3285554.pdf
    • http://files.thefreckledpeddler.com/uploads/1/3/1/3/131398246/wixapajar-xutolosakisajos.pdf
    • https://tamiwawafota.files.wordpress.com/2020/06/39801242333.pdf
    • https://rekerotufosu.files.wordpress.com/2020/06/97051621964.pdf
    • https://ronezas.files.wordpress.com/2020/07/kukixadezozejexetelebawaz.pdf
    • https://sufiwow.files.wordpress.com/2020/06/59641937092.pdf
    • https://tofugubu.files.wordpress.com/2020/06/xugevobidawomajelan.pdf
    • https://kusulubir.files.wordpress.com/2020/07/fopujutugamivavusodalel.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/35209966956.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/33374625424.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/surorut.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mekokagowofulagifofid.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mowelikuzamutaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/parisibudipaxetiwori.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_off00005057.bin
8e514fb433862a041cfd97e9fb0d95e458ef8edd468907a3650d0530fce6788d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5057 4860 bytes
font_01_sfnt_off000060ce.bin
4b31fe2ed356cd3ce5c477fca8c76cd6314eb65fea7a20f2573339da1a28965f
pdf-font-stream PDF embedded font (sfnt) at offset 0x60CE 9636 bytes