Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e87a643953f541e…

MALICIOUS

PDF

83.7 KB Created: 2020-09-16 15:44:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c0bd25fbea22c140dba9d2c48043d87 SHA-1: 328dd91203ef36dd038d75a444604c4d3c802986 SHA-256: 4e87a643953f541e34826e222095a04488039d679cc66e58f636c8ea776fe68b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=naruto+bleach+wiki'. This URL is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, also contains this URL, reinforcing its malicious intent. The presence of numerous other benign-looking PDF links suggests a potential SEO poisoning or link farm tactic to obscure the malicious redirect.

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.me/wix?keyword=naruto+bleach+wiki
    • https://cdn.shopify.com/s/files/1/0439/0790/7752/files/alimentos_para_el_cerebro.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38935964995.pdf
    • https://cdn.shopify.com/s/files/1/0431/0951/5425/files/85554056456.pdf
    • https://cdn.shopify.com/s/files/1/0436/1561/7182/files/531737981.pdf
    • https://cdn.shopify.com/s/files/1/0432/3078/9794/files/awesome_mix_vol_2_songs.pdf
    • https://cdn.shopify.com/s/files/1/0432/2259/7796/files/big_book_biologi_sma.pdf
    • https://cdn.shopify.com/s/files/1/0429/2398/3015/files/tavina.pdf
    • https://cdn.shopify.com/s/files/1/0440/1099/5862/files/chief_keef_new_song.pdf
    • https://cdn.shopify.com/s/files/1/0433/7680/3990/files/9904967293.pdf
    • https://cdn.shopify.com/s/files/1/0438/1078/3394/files/bosalavofepo.pdf
    • https://cdn.shopify.com/s/files/1/0432/4396/2532/files/dirty_rich_cinderella_story_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/8726/3899/files/tavajufewapudedu.pdf
    • https://cdn.shopify.com/s/files/1/0437/4275/7013/files/nixijoses.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_off0000c44d.bin
20df003b26545cee4fb97423db5f02a58d6dc24701e03af2bd9f30eb60f5cbba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC44D 22872 bytes
font_01_sfnt_off00010c16.bin
b804eb17082a98ce6f834c7e1ecac7644645f36ad2191d7f0c7838f29af2c3bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C16 4976 bytes
font_02_sfnt_off00011d16.bin
2aa1774c81ed17ab3213f5421766b24b03df081c74feb1e7eb8cc5881df3b6c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D16 10756 bytes

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