Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b0a2feb791aab82…

MALICIOUS

PDF

35.2 KB Created: 2020-07-26 20:11:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91defaa3188b40c220536f54ed07816d SHA-1: b4f404f70365df473536b475f92a70ede4e00826 SHA-256: 1b0a2feb791aab82fc143ab88fd636fee2b4922a394998c2ed5e4953078571ac
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which are designed to appear as benign documents hosted on Shopify. However, one critical heuristic firing indicates that a link redirects to known malicious infrastructure. The document body, though heavily obfuscated, contains text related to a "char broil grill manual", suggesting a lure to trick users into clicking the malicious links. 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.cc/pify?keyword=char+broil+grill+manual
    • http://files.bigstridetherapy.com/uploads/1/3/0/8/130874213/8005346.pdf
    • http://files.calvaryswedehomechurch.com/uploads/1/3/1/8/131858287/sabewozi.pdf
    • http://files.theskindistrict.com/uploads/1/3/1/4/131454603/99a3fa6.pdf
    • http://files.mysticridgegoldens.com/uploads/1/3/1/3/131380944/pajetojinikexo.pdf
    • http://files.joshuawilsongnv.com/uploads/1/3/0/7/130776351/zapeb_lirererakaji_zazipu_goduzegusux.pdf
    • http://files.calvaryswedeh
    • https://cdn.shopify.com/s/files/1/0437/1932/7896/files/tewur.pdf
    • https://cdn.shopify.com/s/files/1/0440/5926/3141/files/57198879262.pdf
    • https://cdn.shopify.com/s/files/1/0431/6885/8276/files/niratogodowo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/tudekogixijujob.pdf
    • https://cdn.shopify.com/s/files/1/0432/4111/1716/files/13365390529.pdf
    • https://cdn.shopify.com/s/files/1/0435/2655/3752/files/77184266591.pdf
    • https://cdn.shopify.com/s/files/1/0430/7265/1413/files/45060236852.pdf
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/31809107217.pdf
    • https://cdn.shopify.com/s/files/1/0431/7826/2689/files/rogefugoniguwojapasepikop.pdf
    • https://cdn.shopify.com/s/files/1/0428/6529/5526/files/wopufidododovasovo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0092/2261/files/23197141515.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_off00005068.bin
041e199719e1f3805cb171f507a49103f644ddd73ddcae233b36758e7a0218d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5068 4768 bytes
font_01_sfnt_off0000606c.bin
4024d8c29ab868b3991b87dee9399f32dcbd1cd6a11cbdd6bd0ff1e4281f6b1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x606C 9224 bytes

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