Malicious PDF — malware analysis report

Static analysis result for SHA-256 d53fa56d5bc95252…

MALICIOUS

PDF

45.9 KB Created: 2020-08-12 17:44:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59d0a630297b07fc062e9180ad920689 SHA-1: 5c7081e1a7da21ce75a76918d77e6a663637b01f SHA-256: d53fa56d5bc95252a7f691e4c16fcc62f01c2a340456631631bb55ff8b273b10
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=contexto+social+definicion+pdf'. This indicates the document is designed to redirect users to potentially harmful content. Additionally, a PDF link farm heuristic was triggered, with numerous external links, many hosted on Shopify. The document body, though partially corrupted, contains text related to 'Contexto social definicion pdf' and mentions 'wkhtmltopdf', suggesting a lure document. 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=contexto+social+definicion+pdf
    • http://lexoxodek.iowasubtleimagery.com/uploads/1/3/1/3/131398140/7504156.pdf
    • http://wusan.intothewild-photography.com/uploads/1/3/1/0/131070089/6179253.pdf
    • http://zojizolon.clairehedden.com/uploads/1/3/0/9/130969080/8f82244cc511.pdf
    • https://cdn.shopify.com/s/files/1/0437/8771/4721/files/38400289184.pdf
    • https://cdn.shopify.com/s/files/1/0432/0549/2904/files/85594735873.pdf
    • https://cdn.shopify.com/s/files/1/0427/4470/9276/files/bitsat_exam_paper.pdf
    • https://cdn.shopify.com/s/files/1/0438/7107/6520/files/buku_akuntansi_pemerintahan.pdf
    • https://cdn.shopify.com/s/files/1/0431/2445/7633/files/epidemiologia_veterinaria_michael_thrusfield_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/3698/2952/files/35773725885.pdf
    • https://cdn.shopify.com/s/files/1/0427/9002/7430/files/wopawebipunamanuraxuxefo.pdf
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/is_it_worth_having_a_vpn.pdf
    • https://cdn.shopify.com/s/files/1/0432/9085/3541/files/lujiferenu.pdf
    • https://cdn.shopify.com/s/files/1/0429/0406/0071/files/national_buckeye_scholarship.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_off00006a70.bin
5b0112cfdc3b50e9117f27740b5259dcebbb4d759ceab745aa02e461da825ce1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A70 4932 bytes
font_01_sfnt_off00007b4f.bin
2067e30c7590d8f632a2a22fbf5c35ee0c9acd66acb4d6269d049cd4c6cb8193		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B4F 9684 bytes
font_02_sfnt_off00009c69.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C69 4324 bytes

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