Malicious PDF — malware analysis report

Static analysis result for SHA-256 beaacc938a195c9b…

MALICIOUS

PDF

51.1 KB Created: 2020-08-21 23:59:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe8fbf6e0783985305371eb45234dbe4 SHA-1: d65ae362f7c46613525ade3b2b7d2483305885bb SHA-256: beaacc938a195c9b1871b206ee38994b1098ddc388d973823053dde3f96af4b9
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Hail of blades yasuo guide' and the malicious URL, suggesting a lure to a malicious site disguised as a guide. The heuristic firings confirm the presence of a malicious redirector and a link farm.

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/pify?keyword=hail+of+blades+yasuo+guide
    • http://files.midwestegress.com/uploads/1/3/2/6/132696351/tumizuzufufiz.pdf
    • http://dosozogaz.goldaes.com/uploads/1/3/1/3/131378950/606088.pdf
    • http://tawot.twintreesjewelry.com/uploads/1/3/0/7/130738531/xitekideneduji.pdf
    • http://files.yoshikoeastvillage.com/uploads/1/3/1/8/131871462/16a056305.pdf
    • http://voligom.thetruthresource.org/uploads/1/3/2/8/132814930/b74329bba5.pdf
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/71798108668.pdf
    • https://cdn.shopify.com/s/files/1/0429/3663/1452/files/metijaruxanamuxaw.pdf
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/31153646348.pdf
    • https://cdn.shopify.com/s/files/1/0435/6413/8651/files/niwaso.pdf
    • https://cdn.shopify.com/s/files/1/0431/9212/3560/files/ejemplo_anteproyecto_de_investigacion.pdf
    • https://cdn.shopify.com/s/files/1/0429/3728/6815/files/hollow_block_making_machine.pdf
    • https://cdn.shopify.com/s/files/1/0428/3452/6375/files/ignou_bpcchn_exam_form.pdf
    • https://cdn.shopify.com/s/files/1/0430/7002/9975/files/44577067953.pdf
    • https://cdn.shopify.com/s/files/1/0441/1329/7560/files/notidalumudanisiwozon.pdf
    • https://cdn.shopify.com/s/files/1/0438/6727/5424/files/23668721954.pdf
    • https://cdn.shopify.com/s/files/1/0437/7876/9045/files/android_apps_not_through_google_play.pdf
    • https://cdn.shopify.com/s/files/1/0433/5714/3205/files/51695439757.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_off0000731c.bin
7a0a6117ed28257d165ea630df485ab14ee363d6aea9f1c869d5e876cff0671e
pdf-font-stream PDF embedded font (sfnt) at offset 0x731C 5184 bytes
font_01_sfnt_off000084d5.bin
7697fd5e2e527b31a1c7c0e43e87e9b4a0be30669b1cb5d4adb09cb423c7ee43
pdf-font-stream PDF embedded font (sfnt) at offset 0x84D5 10184 bytes
font_02_sfnt_off0000a7f0.bin
c3d0ee408bee49a88931d2ac630a9fb52e88a46fabab5a72aa19e78bbe1d3826
pdf-font-stream PDF embedded font (sfnt) at offset 0xA7F0 16376 bytes