Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cc2b4a643ff3667…

MALICIOUS

PDF

49.3 KB Created: 2020-08-31 02:15:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 786cc2a6e47a79a9e4eb0de09796beb4 SHA-1: 93ef405feab640ce74ec1ee192ee6a9747d20174 SHA-256: 8cc2b4a643ff36675eeee88ef65baf5d3f4aba8ac803e1ed386818daf2b8ed99
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is presented within the document body, disguised as a 'monster hunter stories save editor'. The file also exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further malicious 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.com/wix?keyword=monster+hunter+stories+save+editor
    • https://cdn.shopify.com/s/files/1/0434/4859/8678/files/tevij.pdf
    • https://cdn.shopify.com/s/files/1/0460/3969/5524/files/wuxafisedobawesota.pdf
    • https://cdn.shopify.com/s/files/1/0431/8360/3876/files/wuvogamababobomeper.pdf
    • https://cdn.shopify.com/s/files/1/0457/8816/8358/files/xabopurajomed.pdf
    • https://cdn.shopify.com/s/files/1/0430/5348/2135/files/49016443514.pdf
    • https://static.usrfiles.com/ugd/cc14e4_71fcbbff43524770be1af5229e4e6871.pdf
    • https://static.usrfiles.com/ugd/0ad6c7_44737c7996114074a8d49b5eeacb5f6c.pdf
    • https://cdn.shopify.com/s/files/1/0438/9427/6264/files/total_gym_workout_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/3121/5774/files/codigo_de_etica_profesional_abogados_puerto_rico.pdf
    • https://static.usrfiles.com/ugd/36f25b_cf7c8f39a1054c8b8237c269bda60b96.pdf
    • https://static.usrfiles.com/ugd/912de2_d15919e7615a40029065e1e47044df78.pdf
    • https://static.usrfiles.com/ugd/7dd30d_164b6ce672dd4f4fa9f7244e4050eab6.pdf
    • https://static.usrfiles.com/ugd/a6e5e9_21738c3431fb44c891c1372305af26bf.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_off00007dd7.bin
c61a9ebc22c0b84338f1f67f75bb61cc1673b0dfb2aeb616679fd4b59df124f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD7 4948 bytes
font_01_sfnt_off00008eab.bin
694d5294f3c34f28abc7c4ad4b2809d542db42a47f26f6328f3e31e15acf0737		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EAB 12772 bytes

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