Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c93cafbafcc0438…

MALICIOUS

PDF

45.9 KB Created: 2020-09-07 13:48:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 597ad645d69942448883458937638c83 SHA-1: 7bab49170be3aefeb73f599faed1f0520ad6121d SHA-256: 8c93cafbafcc043861450c1fba3d19836e03b96edf69427844ba927fd0787091
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, https://ttraff.club/wix?keyword=mousehunt+gnawnia+rift+guide, is designed to redirect users to malicious infrastructure. The document also contains a large number of external PDF links, many hosted on Shopify, which is flagged as a PDF link farm. No scripts were extracted from this sample.

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.club/wix?keyword=mousehunt+gnawnia+rift+guide
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/78636831702.pdf
    • https://cdn.shopify.com/s/files/1/0433/1274/2564/files/veterinary_information_network_dental_chart.pdf
    • https://cdn.shopify.com/s/files/1/0431/5050/8194/files/punjab_textbook_physics_9th_class.pdf
    • https://cdn.shopify.com/s/files/1/0440/8950/7990/files/wondershare_dvd_creator_review.pdf
    • https://cdn.shopify.com/s/files/1/0432/6552/3862/files/niwalixetusagekaguj.pdf
    • https://cdn.shopify.com/s/files/1/0428/5025/5014/files/ata_forms.pdf
    • https://cdn.shopify.com/s/files/1/0432/4959/8632/files/fedupogalutulilaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/0278/1083/files/7498684599.pdf
    • https://cdn.shopify.com/s/files/1/0435/2219/5608/files/hari_arora_applied_mathematics_2.pdf
    • https://static.usrfiles.com/ugd/2994dd_b17e0289bd4f4ba4ab2c7fb40bf59022.pdf
    • https://static.usrfiles.com/ugd/51c472_b5098dca5b3144869cad433651ba8329.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006014.bin
98d0d8dc40a0b208729e63b6e73c3e9e8446d74d8b2279419ab6fdc04ac53b93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6014 5116 bytes
font_01_sfnt_off00007188.bin
78c437e1184fdafd96564e545f83e9347a5c5f3580472d03f33c73ec4d143b80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7188 13960 bytes
font_02_sfnt_off00009d33.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D33 4324 bytes

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