Malicious PDF — malware analysis report

Static analysis result for SHA-256 93a1511d7c8971b8…

MALICIOUS

PDF

51.6 KB Created: 2020-08-04 13:16:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fc0a50b76380cfb9e7ecfd8aa916b87 SHA-1: c233dbc45d41b02c774759f1ae42ed014408acbb SHA-256: 93a1511d7c8971b89b9b3061fee19da1b48976738386a05cc72b8c19bd6c3d02
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one identified as a known malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the primary intent is to redirect the user to a malicious site, likely for further exploitation or credential harvesting. No scripts were extracted, limiting the analysis of specific execution behaviors.

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.ru/pify?keyword=tratamiento+carcinoma+papilar+de+tiroides+pdf
    • http://files.beckahjonvoice.com/uploads/1/3/0/7/130776111/9861966.pdf
    • http://files.thedinopark.com/uploads/1/3/2/7/132740415/6535022.pdf
    • http://files.transitionzones.com/uploads/1/3/0/7/130776509/8b9787bee3ad13d.pdf
    • http://files.palmassweettreats.com/uploads/1/3/0/8/130873983/74bf1c796.pdf
    • https://cdn.shopify.com/s/files/1/0428/4959/9654/files/73305326714.pdf
    • https://cdn.shopify.com/s/files/1/0432/9422/8630/files/17444289139.pdf
    • https://cdn.shopify.com/s/files/1/0431/8344/0030/files/theileria_life_cycle.pdf
    • https://cdn.shopify.com/s/files/1/0432/5598/8374/files/19212627231.pdf
    • https://cdn.shopify.com/s/files/1/0430/4837/0333/files/87028272971.pdf
    • https://cdn.shopify.com/s/files/1/0431/8307/9592/files/murefatidijozavezo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4490/4855/files/attitude_seed_bank.pdf
    • https://cdn.shopify.com/s/files/1/0428/0729/6163/files/setepirulo.pdf
    • https://cdn.shopify.com/s/files/1/0438/6154/1014/files/2465816919.pdf
    • https://cdn.shopify.com/s/files/1/0429/5560/4121/files/sizazudelugo.pdf
    • https://cdn.shopify.com/s/files/1/0434/8549/5453/files/sumoxuxipexuwezadafalus.pdf
    • https://cdn.shopify.com/s/files/1/0431/9019/0248/files/53945738182.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_off00007d7a.bin
675e0c09e48e9f7c0ebf6ae61d5e87a74ca84e52cd48f2a8cab9e632972fb11c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D7A 5248 bytes
font_01_sfnt_off00008f3a.bin
f6f052cf08a0ec5fb6ad76bfb17854a7030d7bab09e9661d8959e524690b1c00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F3A 15932 bytes

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