Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1db56cbf87c2ddf…

MALICIOUS

PDF

43.2 KB Created: 2020-08-10 02:40:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 928553fe4bb156c8515923829eab4669 SHA-1: dc9db54e5631ee26b13f7b5c076449baf03c15fa SHA-256: e1db56cbf87c2ddf27d7509c6661b84a12fddedd94af832247dc0bae1407c56c
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=usos+y+aplicaciones+de+alcanos+alquenos+y+alquinos+pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which point to Shopify domains. The document body contains obfuscated text and a URL that appears to be part of the redirection chain. The primary intent seems to be directing users to malicious infrastructure.

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=usos+y+aplicaciones+de+alcanos+alquenos+y+alquinos+pdf
    • http://files.sbjc.org.uk/uploads/1/3/1/3/131381850/xuwobobix_nozofoli.pdf
    • http://files.wiltshirebridlewaysassociation.co.uk/uploads/1/3/2/3/132302814/2784400.pdf
    • http://wanisini.destinationdesignreunion.com/uploads/1/3/0/8/130814238/wusegosego.pdf
    • http://files.jjeffreymesserole.com/uploads/1/3/1/3/131384018/f3faf9c41e.pdf
    • https://cdn.shopify.com/s/files/1/0430/2520/3354/files/advance_care_directive.pdf
    • https://cdn.shopify.com/s/files/1/0428/4681/4374/files/22380311840.pdf
    • https://cdn.shopify.com/s/files/1/0429/0304/4263/files/zaduwajiwopirazujiwadu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7068/4317/files/14577004308.pdf
    • https://cdn.shopify.com/s/files/1/0440/6090/1528/files/83016294051.pdf
    • https://cdn.shopify.com/s/files/1/0433/2827/4585/files/44221873981.pdf
    • https://cdn.shopify.com/s/files/1/0429/8617/6665/files/87769351191.pdf
    • https://cdn.shopify.com/s/files/1/0432/2318/7618/files/kagefubu.pdf
    • https://cdn.shopify.com/s/files/1/0437/4446/0951/files/lebigoxe.pdf
    • https://cdn.shopify.com/s/files/1/0433/2149/1621/files/malaysian_anti_corruption_act_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/4977/1427/files/vosajewezixedukuzugeba.pdf
    • https://cdn.shopify.com/s/files/1/0434/4591/1709/files/96374238099.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_off00005c76.bin
8553a3fee428214904e5d389888add47a308ff8ca3fd084a323e5f996b53ac72
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C76 5072 bytes
font_01_sfnt_off00006dc5.bin
f275495fb0cb15e5bf718ed11c00aba597dd9f0c53a8724c77c4ed63d4a5af8c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC5 10512 bytes
font_02_sfnt_off00008f9d.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F9D 4324 bytes