Malicious PDF — malware analysis report

Static analysis result for SHA-256 403cf8e241cfb9d6…

MALICIOUS

PDF

92.8 KB Created: 2020-08-13 23:05:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b9e5bac58c9752c1a136135e24ee5fe SHA-1: fd52400d842027215a7c89ae6e5cff7314ba342c SHA-256: 403cf8e241cfb9d6b2e29c9f785584bf6f196af9aace465a9bcf607e706a76f2
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one critical heuristic firing indicating a link to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for a movie download, which aligns with the redirector's keyword. The primary IOC is the malicious redirector URL, which is likely used to funnel victims to further 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.com/pify?keyword=kaththi+full+movie++dvdwap
    • http://files.bonnetcatering.com/uploads/1/3/0/7/130738914/4978455.pdf
    • http://dikaluz.myhola.co/uploads/1/3/1/3/131398091/cfd0522962ec394.pdf
    • http://filonana.nc3family.org/uploads/1/3/1/4/131407222/leduzuzazobib_rubenewoli_sajujebusak.pdf
    • http://files.nicolorae.com/uploads/1/3/0/8/130814132/7841088.pdf
    • http://regaw.waughseverydaydollar.com/uploads/1/3/1/3/131383483/fuxetemepu-poxotofufojofe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9911/2099/files/87488637033.pdf
    • https://cdn.shopify.com/s/files/1/0435/4310/1591/files/39770800637.pdf
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/jibexo.pdf
    • https://cdn.shopify.com/s/files/1/0438/0088/7457/files/rotab.pdf
    • https://cdn.shopify.com/s/files/1/0429/8060/6111/files/17036951234.pdf
    • https://cdn.shopify.com/s/files/1/0429/6183/0037/files/58694040334.pdf
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/41907875313.pdf
    • https://cdn.shopify.com/s/files/1/0430/6383/6834/files/crusader_kings_2_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0430/8058/1274/files/partitura_careless_whisper_sax_alto.pdf
    • https://cdn.shopify.com/s/files/1/0434/4047/2229/files/60031816496.pdf
    • https://cdn.shopify.com/s/files/1/0431/1249/7305/files/american_college_of_clinical_pharmacy.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_off000117d7.bin
b59bf498f6ec414468d304c0d68a13d1bd73145ff92aafa097d715e55aabe51f
pdf-font-stream PDF embedded font (sfnt) at offset 0x117D7 5128 bytes
font_01_sfnt_off0001294b.bin
da966093b8ee20557d59a74a52bda094d4d6554a74574bfb2e090cec805b19fe
pdf-font-stream PDF embedded font (sfnt) at offset 0x1294B 11356 bytes
font_02_sfnt_off0001500d.bin
e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6
pdf-font-stream PDF embedded font (sfnt) at offset 0x1500D 16164 bytes