PDF malware analysis — malicious · 43334d05616343fd

MALICIOUS

PDF

39.6 KB Created: 2020-08-30 21:23:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 81a1455475399b61e4cabe891ec0f488 SHA-1: 5b1fdeda446412fc4f29763ab769443ea9ea58f5 SHA-256: 43334d05616343fdfbf484be44bc59efb274d20d1b43c9176cdd68766322f4bb

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains text related to 'functional skills maths level 2 worksheets' and a URL pointing to a redirector. This suggests a social engineering lure to drive traffic to malicious infrastructure.

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/wix?keyword=functional+skills+maths+level+2+worksheets
- https://static.usrfiles.com/ugd/7ff653_81b5bb2ece434f11b65d08ddc81733e5.pdf
- https://static.usrfiles.com/ugd/b8c837_26cbeba4ddf04da9969db20fa7e30476.pdf
- https://static.usrfiles.com/ugd/15cd4d_44a8e6a1e41643908bd419d2087daa45.pdf
- https://static.usrfiles.com/ugd/97368a_1a6196ef96544be382836689e36e7ad2.pdf
- https://static.usrfiles.com/ugd/b8c837_1089c6a8614948b79ff195f8fdd50e4e.pdf
- https://cdn.shopify.com/s/files/1/0432/2256/5032/files/komokukiwoxelomak.pdf
- https://cdn.shopify.com/s/files/1/0434/3224/7445/files/68645665415.pdf
- https://cdn.shopify.com/s/files/1/0462/7942/6197/files/harris_benedict_forml_hesaplama.pdf
- https://cdn.shopify.com/s/files/1/0431/5031/1579/files/35847740270.pdf
- https://static.usrfiles.com/ugd/3cb679_5fbdf42e03cf4004b9b8256b2992aec0.pdf
- https://static.usrfiles.com/ugd/b8c837_25a6bb1d7c204d19aa612d7f8767dc19.pdf
- https://static.usrfiles.com/ugd/804ff6_61f4dde3ef0a4a989f141b11736d25b5.pdf
- https://static.usrfiles.com/ugd/f0e51d_8d6de524fbd1401da505d89a09e211aa.pdf
- https://static.usrfiles.com/ugd/18f527_9441ebc2de5e4a0d89880b551a8df145.pdf
- https://cdn.shopify.com/s/files/1/0429/7133/2767/files/13069109972.pdf
- https://cdn.shopify.com/s/files/1/0429/6287/8618/files/dhl_tracking_number_format_example.pdf
- https://cdn.shopify.com/s/files/1/0431/6885/8272/files/wedding_slideshow_after_effects_template_free.pdf
- https://cdn.shopify.com/s/files/1/0435/1026/8064/files/vatosubipofugezew.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00005ccd.bin` `363076b6ddd98959acbc4c68c0f6441961d264e5e3d1dd640858afaba196c4be`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5CCD	5340 bytes
`font_01_sfnt_off00006ee0.bin` `7b1b7386b02946beca2a069f369cde0b451b76fd48e5a5fd33ce197cea136092`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6EE0	10044 bytes

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