Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c736f99abb9a419…

MALICIOUS

PDF

42.8 KB Created: 2020-08-01 03:19:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94e3572e613e53ca04e7317efb4753c7 SHA-1: bbc654b31c050b3b855b5828f826d68160ed4a77 SHA-256: 7c736f99abb9a41988451f96ccbaba95ed846078c5c2a6066d2e98881a074e86
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a known malicious redirector. This indicates a link farm or SEO poisoning tactic designed to drive traffic to malicious infrastructure. The primary malicious URL identified is https://ttraff.com/pify?keyword=are+poems+italicized, which is flagged as a malicious redirector.

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.com/pify?keyword=are+poems+italicized
    • http://files.pennyandpearlstudio.com/uploads/1/3/1/6/131606630/lakexafalavamego.pdf
    • http://files.stoneycreekcacti.com/uploads/1/3/0/8/130814605/nisazetogefapemi.pdf
    • http://files.concordstorefixturegroup.com/uploads/1/3/2/6/132682684/zonudasenazako_zexukepuwuwide.pdf
    • https://cdn.shopify.com/s/files/1/0432/8649/5397/files/gafaguboko.pdf
    • https://cdn.shopify.com/s/files/1/0434/7301/0840/files/87584631726.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mojijemorewowasimagaxo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1530/6405/files/56360037333.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/deved.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/23083433767.pdf
    • https://cdn.shopify.com/s/files/1/0430/7664/9124/files/8501840657.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xutowoterefabobenovise.pdf
    • https://cdn.shopify.com/s/files/1/0435/3749/8276/files/xowakobozadixowokumavig.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_off000069ce.bin
4fd84887432b6752835e3b9d8de81a5a97c5d3258a73c9321a7d4875e1c25b1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69CE 5256 bytes
font_01_sfnt_off00007b98.bin
42c3c63d33e05911b5690269fcb1f50ba1e75494bac6ac7946d09d9c618eece7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B98 10332 bytes

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