Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7679027613fa4c1…

MALICIOUS

PDF

63.7 KB Created: 2020-08-11 15:41:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 503e91ccfff8c8b51406153f971aa0a4 SHA-1: a022a1232b2aab12c9dfcebcef0e7e2be814c2a9 SHA-256: c7679027613fa4c1c312b872621123c0c222541890423629a163b451e681cb49
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a significant number on cdn.shopify.com. One of the embedded URLs, 'https://ttraff.cc/pify?keyword=augusto+roa+bastos+el+baldio+pdf', is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains this malicious URL, suggesting the primary intent is to redirect 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=augusto+roa+bastos+el+baldio+pdf
    • http://files.shsmusic.org/uploads/1/3/1/4/131453256/maxijekoxo-sababusexesi-xorizipijo-ganokamede.pdf
    • http://xubuk.southribble-greatwar.com/uploads/1/3/0/8/130874254/d4e9e3e25.pdf
    • http://files.triumvirateartists.com/uploads/1/3/1/3/131381374/f89e89f240d32.pdf
    • http://files.fisherpoets.org/uploads/1/3/1/1/131164399/362f898f098bc.pdf
    • http://files.hosannadance.com/uploads/1/3/1/3/131380547/6792064.pdf
    • https://cdn.shopify.com/s/files/1/0429/9158/3391/files/warhammer_40k_rulebook_7th.pdf
    • https://cdn.shopify.com/s/files/1/0431/7764/0092/files/60856100333.pdf
    • https://cdn.shopify.com/s/files/1/0433/0304/3230/files/58410986972.pdf
    • https://cdn.shopify.com/s/files/1/0432/7905/7056/files/ladiwuripoduvog.pdf
    • https://cdn.shopify.com/s/files/1/0432/4294/6715/files/69432313770.pdf
    • https://cdn.shopify.com/s/files/1/0428/3262/5831/files/mcdougal_littell_algebra_1_practice_workbook.pdf
    • https://cdn.shopify.com/s/files/1/0437/1437/9930/files/galactic_civilizations_2_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/0197/0837/files/vudixu.pdf
    • https://cdn.shopify.com/s/files/1/0440/4586/1014/files/2453374382.pdf
    • https://cdn.shopify.com/s/files/1/0429/6550/0060/files/xufado.pdf
    • https://cdn.shopify.com/s/files/1/0431/3559/8758/files/93368881298.pdf
    • https://cdn.shopify.com/s/files/1/0433/2558/7609/files/97960558471.pdf
    • https://cdn.shopify.com/s/files/1/0429/7015/3113/files/pusibotemijibekimobo.pdf
    • https://cdn.shopify.com/s/files/1/0439/4126/5566/files/56226111168.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/85286285305.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_off0000b928.bin
f7041e2d0f3c3c324c8742bc9c3eae1ad7da0163f708f2074c7a3ed981a1464f
pdf-font-stream PDF embedded font (sfnt) at offset 0xB928 5336 bytes
font_01_sfnt_off0000cb53.bin
2adf5ee4cdb9a719f8bc296fb1d2f631a828d0f6058c688083ab35e003bba9d1
pdf-font-stream PDF embedded font (sfnt) at offset 0xCB53 11076 bytes