Malicious PDF — malware analysis report

Static analysis result for SHA-256 25409b9354b45439…

MALICIOUS

PDF

43.6 KB Created: 2020-08-10 10:08:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f197025e1d9715fe09ed0d5746d7640 SHA-1: 196769c24df7ea8aef897188bdc7e60294c0e1dd SHA-256: 25409b9354b454397fc93a3ff2d0ad356c32b8655e5af2d009991fd79123865e
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though corrupted, suggests a lure related to 'learning stock trading'. The PDF also contains a large number of external links, many of which point to Shopify domains, but one of the primary links is to a known malicious redirector. The file is identified as a PDF, and the heuristics suggest it's designed to redirect users to malicious content.

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=belajar+saham+untuk+pemula+pdf
    • http://files.battsfamilypractitioners.com/uploads/1/3/2/6/132681771/5112845.pdf
    • http://fakisajip.harmony42.com/uploads/1/3/0/7/130739275/lunitekowanevin-riluruzevogem.pdf
    • http://files.returntoyourself.org/uploads/1/3/1/8/131871729/4642f35.pdf
    • https://cdn.shopify.com/s/files/1/0428/1355/4855/files/10828887373.pdf
    • https://cdn.shopify.com/s/files/1/0432/1371/7662/files/jomukosuwiwetawomi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4054/6714/files/xifukunid.pdf
    • https://cdn.shopify.com/s/files/1/0434/1386/4615/files/jitesarizotux.pdf
    • https://cdn.shopify.com/s/files/1/0432/0726/2367/files/babagobuxepizilixorox.pdf
    • https://cdn.shopify.com/s/files/1/0435/8491/3563/files/nekozomanowuf.pdf
    • https://cdn.shopify.com/s/files/1/0446/5029/9555/files/demo_pause_cs_go_command.pdf
    • https://cdn.shopify.com/s/files/1/0430/0800/0163/files/rent_agreement_format_in_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3110/9538/files/kiserujuviwemukavufenipu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4489/6925/files/pesetimokomidik.pdf
    • https://cdn.shopify.com/s/files/1/0440/7489/3477/files/85432196623.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_off00006c93.bin
5b0504b28403abef17e1909530b2cd9d6eaedea92229676d586eb17eb6b26085		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C93 5468 bytes
font_01_sfnt_off00007f08.bin
c1576f9de818f32f63c2d55a35ec0c5d28d56770c30f50db1cf4001f9822c801		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F08 10224 bytes

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