Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8563b2e35632850…

MALICIOUS

PDF

50.7 KB Created: 2020-08-09 11:31:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60b3b03aea1eb8e7a077ed989fb4ed81 SHA-1: 8a781211f5693cf584d10a003298bec2c8f60752 SHA-256: d8563b2e356328508bdd0dcbbb526ebe9e1cc50e225fc6f744666ac032c5415f
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Antisense RNA technology' and a URL that appears to be part of a link farm designed to manipulate search engine results. This suggests a phishing or scam attempt to drive traffic to malicious infrastructure.

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=antisense+rna+technology+and+its+applications+pdf
    • http://files.electricaloutlet.info/uploads/1/3/1/6/131607062/8038377.pdf
    • http://files.multidis.org/uploads/1/3/2/8/132815004/xuwezapavofis-jurut-zurun.pdf
    • http://files.justsayin.ca/uploads/1/3/1/3/131379899/sezadininelati.pdf
    • http://files.thedragonslibrary.net/uploads/1/3/2/6/132696351/8943663.pdf
    • http://files.canyonchapel.org/uploads/1/3/0/8/130873715/8419160.pdf
    • https://cdn.shopify.com/s/files/1/0436/3167/3502/files/92321938702.pdf
    • https://cdn.shopify.com/s/files/1/0428/2341/8019/files/pisasemijuxugatuxadenedew.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/68513135127.pdf
    • https://cdn.shopify.com/s/files/1/0439/3956/1630/files/19141306882.pdf
    • https://cdn.shopify.com/s/files/1/0437/8856/6677/files/93002588313.pdf
    • https://cdn.shopify.com/s/files/1/0430/8847/8365/files/28949965747.pdf
    • https://cdn.shopify.com/s/files/1/0432/4206/1986/files/linkedin_boolean_search.pdf
    • https://cdn.shopify.com/s/files/1/0434/0704/8860/files/xavolerebabafajixepav.pdf
    • https://cdn.shopify.com/s/files/1/0433/4046/4281/files/vinetapiwefo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5723/3576/files/1557448806.pdf
    • https://cdn.shopify.com/s/files/1/0431/0846/6845/files/41310346442.pdf
    • https://cdn.shopify.com/s/files/1/0434/7779/4982/files/programa_arquitectonico_restaurante.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_off00008686.bin
914979f0dba7a063b13d1bad713ee99bc3dc9ccbe59aa5da27eee49e7a509d95		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8686 5508 bytes
font_01_sfnt_off0000994a.bin
05a3cb3c6067cdd937dcf32c567137a91b074795e951d10ba20b8e9d07da6464		 pdf-font-stream PDF embedded font (sfnt) at offset 0x994A 10456 bytes

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