Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0baa9a436eff3fa…

MALICIOUS

PDF

75.9 KB Created: 2020-08-28 01:08:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 733e11995bd4ae9ad6367920fa6e7fc1 SHA-1: 462fb1d0e42ba933be9cb613b8398dd06b035d1b SHA-256: b0baa9a436eff3fa39742ea9d77c3bad0e3af6e4d8fdcaa3e627dc1ea92934f9
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 platforms like Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to obscure the ultimate destination. The document body, though partially corrupted, contains text related to physics and the authoring tool, suggesting a lure to disguise the malicious intent. The presence of a malicious redirector and a link farm indicates an attempt to drive traffic to potentially harmful 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=when+push+comes+to+shove+mastering+physics
    • http://fejuzuse.reselliconz.com/uploads/1/3/1/0/131070109/3522381.pdf
    • https://cdn.shopify.com/s/files/1/0437/5737/1546/files/mezixagixorinufamevavo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5903401900.pdf
    • https://cdn.shopify.com/s/files/1/0429/8339/1395/files/ca_inter_reference_books.pdf
    • https://cdn.shopify.com/s/files/1/0435/6440/0798/files/golang_template_range_string_array.pdf
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/blogs_de_novelas_romanticas.pdf
    • https://cdn.shopify.com/s/files/1/0430/8611/9079/files/apex_legends_without_origin.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nemevisofopanufu.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 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_008_off0000f247.bin
6e9b1e0fa2708ec01755268fddee5b26dbe9404d73282e1a3b2668b90c565001		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xF247 17868 bytes
font_00_sfnt_off00007915.bin
9cc4a2f2b9a199f2aeec37cf65e921def08b6f9216a718241fec1e9910762e44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7915 7268 bytes
font_01_sfnt_off00009217.bin
0c4abbc70afb0250f84d4694ca0092af1772d834c6810e157172f0d346deafd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9217 5492 bytes
font_02_sfnt_off0000a4a4.bin
886451285e27edd840656cc5ac3a3c35e84be19bb8e66f5024e1c82b78a20037		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4A4 4592 bytes
font_03_sfnt_off0000b425.bin
be50fdeffcb137d4f437537d84da55c63fbb22f9d9f90da931f6564aca907f28		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB425 5136 bytes
font_04_sfnt_off0000c4a8.bin
942c84529cec6bfa78898f84bd00fbe179a476f2be969c12dc572dbe1cda65ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC4A8 14656 bytes
font_06_sfnt_off00010dd7.bin
99032bce75bed94ae63b9d60f9f7e47dbceea85821136fbfc37df1484a2ba025		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10DD7 5396 bytes

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