Malicious PDF — malware analysis report

Static analysis result for SHA-256 34fcfe8b56aabf1f…

MALICIOUS

PDF

44.5 KB Created: 2020-08-12 10:30:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7982e645947cd358c15c2032718bade4 SHA-1: 52ccecbd32fd3d8b129f1a90d4fa0432a3958c3c SHA-256: 34fcfe8b56aabf1fd68f444b559ca9430c35c2aa9f2c468a86156bfff103ddfe
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=autonomic+nervous+system+table+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The PDF also contains a large number of external links, indicative of a link farm, further supporting the malicious redirection attempt.

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.cc/pify?keyword=autonomic+nervous+system+table+pdf
    • http://files.linhbridal.com/uploads/1/3/1/3/131398054/fad0fe1a71d49.pdf
    • http://files.joshjchoi.com/uploads/1/3/1/4/131437276/6070165.pdf
    • http://files.megansmission.net/uploads/1/3/0/7/130739126/kakakip_bewidi_situnaluvisoxo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7473/8593/files/15298225103.pdf
    • https://cdn.shopify.com/s/files/1/0434/1504/4252/files/nopuwajuzudesifemikibikom.pdf
    • https://cdn.shopify.com/s/files/1/0435/2317/8656/files/pragmatica_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/razikeruranofe.pdf
    • https://cdn.shopify.com/s/files/1/0434/8415/1974/files/ps4_too_many_usb.pdf
    • https://cdn.shopify.com/s/files/1/0429/7375/7603/files/61729375410.pdf
    • https://cdn.shopify.com/s/files/1/0431/6112/5013/files/zuzakilisikigopukobezase.pdf
    • https://cdn.shopify.com/s/files/1/0436/6663/6953/files/66155258718.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8007882555.pdf
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/79615576992.pdf
    • https://cdn.shopify.com/s/files/1/0434/7982/6589/files/mubokabukomu.pdf
    • https://cdn.shopify.com/s/files/1/0450/7323/6131/files/assembly_language_program_development_tools_8086.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/
    • https://cdn.shopify.com/s/fi

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fad.bin
42df0240ca34f393e87545788fd2c419518922594b63c73d6fc6b092113dd295		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FAD 5592 bytes
font_01_sfnt_off000082a1.bin
50c4d9f2e03da596d17dfe005d3681b63c9b92e0145a102890218d8b68058137		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82A1 9932 bytes

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