Malicious PDF — malware analysis report

Static analysis result for SHA-256 59061a684abed0ec…

MALICIOUS

PDF

47.3 KB Created: 2020-07-22 18:07:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66e3c1fe2b611e2fe23d0a2a7ceb15d5 SHA-1: 237de32253878881b64912ad7d34f515d2935b70 SHA-256: 59061a684abed0ecf9d5cf225a8241fbcffeb60148f22323ef6644550df78962
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with the primary redirector URL identified as malicious. This indicates a likely attempt to lure users to malicious sites. The heuristic firings confirm the presence of malicious redirector links and a link farm within the PDF structure. No scripts were extracted from this sample.

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=aprendizagem+organizacional+no+brasil+pdf
    • http://files.cfbands.com/uploads/1/3/1/3/131384173/gejikiwotoberi.pdf
    • http://files.tigerterrain.com/uploads/1/3/1/8/131856188/wotanuv.pdf
    • http://files.ajconsultingcompany.com/uploads/1/3/1/3/131398076/1398442.pdf
    • http://files.ncautotransport.com/uploads/1/3/1/4/131438067/kebikiwemib.pdf
    • http://files.upwardfacinglife.com/uploads/1/3/1/4/131436971/velolerulamur_baxafijirun.pdf
    • http://files.upwardfacinglife.com/uploads/1/3/1/4/131436971/velolerulam
    • https://cdn.shopify.com/s/files/1/0432/2125/4312/files/62653813229.pdf
    • https://cdn.shopify.com/s/files/1/0434/1438/8888/files/99791545062.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37144816260.pdf
    • https://guzubuxokom.files.wordpress.com/2020/07/giteme.pdf
    • https://sosabufuji.files.wordpress.com/2020/06/75108247423.pdf
    • https://pogarirurur.files.wordpress.com/2020/07/kivowafiviti.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/20205145996.pdf
    • https://cdn.shopify.com/s/files/1/0434/6642/4477/files/20743253489.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8007882555.pdf
    • https://cdn.shopify.com/s/files/1/0433/2499/7800/files/60598025075.pdf
    • https://cdn.shopify.com/s/files/1/0427/6387/8566/files/78479474688.pdf
    • https://cdn.shopify.com/s/files/1/0431/3153/5524/files/waxevuge.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/zemuxefamasivo.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_off0000754d.bin
d93f837b3e5966fc5516dfa161488deb419912101ee24634c9fa3cad6fe1644f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x754D 5360 bytes
font_01_sfnt_off0000875e.bin
04cbc82aff23db8946468cceaf9e7fb91613bd7d670657131870870e0a889f58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x875E 13012 bytes

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