Malicious PDF — malware analysis report

Static analysis result for SHA-256 364e86ac052206b2…

MALICIOUS

PDF

56.6 KB Created: 2020-08-09 02:23:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a77e20c695020fa85e2cd42680c45d7c SHA-1: 6f105cdd37983892f7081eac74c7ac3d8cf4ab1e SHA-256: 364e86ac052206b285f8980b4de1265b107313fd85caf07ab5bbf22b7cfd19c2
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'adventure of a lifetime guitar pdf' and the malicious URL, suggesting a lure to trick users into downloading further malicious content. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=adventure+of+a+lifetime+guitar+pdf
    • http://files.juvemtpleasant.com/uploads/1/3/0/7/130739227/2404650.pdf
    • http://files.cinnamonsbotanicals.com/uploads/1/3/0/8/130874582/gokasusibatab.pdf
    • http://files.rebelliousrheaboutique.shop/uploads/1/3/1/4/131406413/2090860.pdf
    • http://punaw.nettletongardenservices.co.uk/uploads/1/3/2/3/132303338/xoderexixarokigexig.pdf
    • http://sevir.kengoesclick.com/uploads/1/3/0/7/130775732/0b2925e81ab9.pdf
    • https://cdn.shopify.com/s/files/1/0429/7578/9215/files/calculus_lifesaver.pdf
    • https://cdn.shopify.com/s/files/1/0435/9107/3947/files/13787033343.pdf
    • https://cdn.shopify.com/s/files/1/0429/6415/6582/files/sotabiwotonarasu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1218/4474/files/40206634536.pdf
    • https://cdn.shopify.com/s/files/1/0429/4233/3084/files/wumezemivezufubu.pdf
    • https://cdn.shopify.com/s/files/1/0437/7041/3207/files/putting_words_in_alphabetical_order_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/4206/3004/files/7915568385.pdf
    • https://cdn.shopify.com/s/files/1/0429/6104/3605/files/34186580063.pdf
    • https://cdn.shopify.com/s/files/1/0440/5755/9190/files/esab_mig_master_250.pdf
    • https://cdn.shopify.com/s/files/1/0428/0044/7655/files/41419731433.pdf
    • https://cdn.shopify.com/s/files/1/0430/5901/9933/files/xugapix.pdf
    • http://coldplay.com/adventure-of-a-lifetime-lyrics/\\rBeats
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://coldplay.com/adventure-of-a-lifetime-lyrics/\rBeats
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000710c.bin
11315f754428a19eb61c559540b732259b59f9d430977afb6df59a2ebe90c207		 pdf-font-stream PDF embedded font (sfnt) at offset 0x710C 5116 bytes
font_01_sfnt_off0000825f.bin
946d0123c94f2f2b77a3746ac3e573e06bc8329de90c773b0b2ce19755d48461		 pdf-font-stream PDF embedded font (sfnt) at offset 0x825F 15012 bytes
font_02_sfnt_off0000b1d6.bin
541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB1D6 16204 bytes
font_03_sfnt_off0000c704.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC704 4324 bytes

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