Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeaf5583635c3425…

MALICIOUS

PDF

47.2 KB Created: 2020-08-06 15:49:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59a98aa5fa41b020db9e58e33fe13694 SHA-1: 5a0669cf1cd9bbc15a8bd8ae8a02c343c64e32c3 SHA-256: aeaf5583635c3425eb9d11fe0a69a086a6ff43e01b8a02ab110d9d07d0869f8c
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=blossoms+of+the+savannah+essays+pdf'. This indicates an attempt to redirect the user to a malicious site, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains the same URL and text related to academic essays, reinforcing the lure. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility.

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/pify?keyword=blossoms+of+the+savannah+essays+pdf
    • http://files.tibbettspointlighthouse.org/uploads/1/3/1/6/131607522/kudanolij-melabane.pdf
    • http://mivurez.cinizar.com/uploads/1/3/1/3/131379732/foxalevam.pdf
    • http://files.palmettoswingevents.com/uploads/1/3/2/8/132814241/8523336.pdf
    • http://files.wildeaboutexploring.com/uploads/1/3/1/4/131407135/80581.pdf
    • https://cdn.shopify.com/s/files/1/0440/0663/7726/files/romazicon_davis.pdf
    • https://cdn.shopify.com/s/files/1/0431/4447/8874/files/30530168031.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4266/files/3579502643.pdf
    • https://cdn.shopify.com/s/files/1/0430/7881/1810/files/bovadowudumikafazivevobam.pdf
    • https://cdn.shopify.com/s/files/1/0435/6866/0643/files/80696617897.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/basketry_merit_badge_book.pdf
    • https://cdn.shopify.com/s/files/1/0447/8540/2013/files/beautiful_in_white_riyandi_kusuma.pdf
    • https://cdn.shopify.com/s/files/1/0428/8466/1407/files/minecraft_medieval_farm.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9800/files/cell_block_cytology.pdf
    • https://cdn.shopify.com/s/files/1/0432/5870/8118/files/how_to_make_a_book_with.pdf
    • https://cdn.shopify.com/s/files/1/0434/9624/3364/files/thousand_years_of_love.pdf
    • https://cdn.shopify.com/s/files/1/0432/5919/9650/files/32858436231.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_off00007b15.bin
2d3421ccf743727ab1d397282226122838c7faca7e0ed0124c7ed111b467e921
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B15 5396 bytes
font_01_sfnt_off00008d60.bin
7d1a6e5b6b74654500f9e477b2b2b6814b6fa881f75919bba37590c59718cb24
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D60 10208 bytes