Malicious PDF — malware analysis report

Static analysis result for SHA-256 358ed6982a847b65…

MALICIOUS

PDF

45.2 KB Created: 2020-08-30 03:58:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 821ca6b226b011b411d8829c0f3ee024 SHA-1: 63163f22a7ea8fd3e30a481b45ab4de6ffdfac35 SHA-256: 358ed6982a847b65e0a461a62ee1ae3adcd7d1228c5d79264162b46c2b8efbc8
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with a critical heuristic firing for a 'PDF_SEO_LINK_FARM'. One of these links points to a known malicious redirector infrastructure. The document body contains garbled text but includes the same suspicious URL found in the heuristics, suggesting an attempt to lure users to a malicious site.

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/wix?keyword=vizio+d+series+vs+m+series
    • https://cdn.shopify.com/s/files/1/0461/9560/5667/files/inventory_html_template.pdf
    • https://cdn.shopify.com/s/files/1/0429/3361/6803/files/96486369930.pdf
    • https://cdn.shopify.com/s/files/1/0465/9619/4469/files/contoh_report_text_bahasa_inggris_hewan.pdf
    • https://static.usrfiles.com/ugd/ea5d7b_7550ec9a227b486aa0b891e9a9a1a606.pdf
    • https://static.usrfiles.com/ugd/b8c837_8fd8ef06d5e1496ba36508712f43b540.pdf
    • https://static.usrfiles.com/ugd/b8c837_b0e989ece0c043408877d2cb320f75f9.pdf
    • https://cdn.shopify.com/s/files/1/0431/5139/2922/files/12610332795.pdf
    • https://cdn.shopify.com/s/files/1/0428/6296/8991/files/youreporter_incendio_milano.pdf
    • https://cdn.shopify.com/s/files/1/0448/1299/2672/files/muscles_of_foot.pdf
    • https://cdn.shopify.com/s/files/1/0428/4828/8934/files/psoriasis_arthritis_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0433/2270/4030/files/mininufegaxoto.pdf
    • https://cdn.shopify.com/s/files/1/0437/5733/8776/files/letter_n_colouring_sheets.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_off00007411.bin
ef021d54f8cec61dcbb518febc8c536c56ade083637f5dfa0745b81a4c25eeb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7411 4804 bytes
font_01_sfnt_off00008465.bin
94483480453e96fcfdd9241e9da4a787ce5debf803a4f1a5c0781eb3ffbf2ce2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8465 10352 bytes

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