Malicious PDF — malware analysis report

Static analysis result for SHA-256 bad9ca79cb1a4fc7…

MALICIOUS

PDF

45.5 KB Created: 2020-08-01 11:47:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a801e4245f367a1460aabf8987ff9fe SHA-1: b2564562d57f3688b8570313700862c29b92a6ac SHA-256: bad9ca79cb1a4fc7e36dd0e38622cea4fcd471913dd88fb533cde716fe38a895
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in

The PDF file contains a large number of embedded links, with one identified as a malicious redirector. The document body is heavily obfuscated but contains references to URLs, including the malicious redirector and numerous other PDF files hosted on Shopify. This suggests a link farm or redirection strategy to distribute malicious content. No scripts were extracted from this sample.

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=steamboat+snow+report
    • http://files.annawatkinsfisher.com/uploads/1/3/0/7/130739951/6803078.pdf
    • http://files.jpkvcollaborative.org/uploads/1/3/1/4/131406537/2522684.pdf
    • http://files.ablepestinc.com/uploads/1/3/0/9/130969705/1637905.pdf
    • http://files.gloriousminis.com/uploads/1/3/0/8/130874569/2142629.pdf
    • https://cdn.shopify.com/s/files/1/0435/2638/9912/files/wizireza.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/97167641058.pdf
    • https://cdn.shopify.com/s/files/1/0432/7967/9646/files/3806245153.pdf
    • https://cdn.shopify.com/s/files/1/0437/5068/6874/files/xilupatikizufopomelo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3031/5159/files/dabinetogawolimuledobiba.pdf
    • https://cdn.shopify.com/s/files/1/0441/3816/8472/files/57231576669.pdf
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/junizolerizewuzuze.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44411244229.pdf
    • https://cdn.shopify.com/s/files/1/0430/4312/7447/files/82311368506.pdf
    • https://cdn.shopify.com/s/files/1/0430/9018/2304/files/todereloroditexebolesuwag.pdf
    • https://cdn.shopify.com/s/files/1/0430/8657/7828/files/rabaturapepizatijot.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_off000065dd.bin
c90de83018ea876c0f66b9ae804637eb695f94939cfc95cb0c4c86b6d1eff581		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65DD 5008 bytes
font_01_sfnt_off000076c4.bin
73d23b775d8d1d01b345c877405c8acd5239e358e31944d67fea2baac10bafe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76C4 10660 bytes
font_02_sfnt_off00009b2a.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B2A 4324 bytes

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