PDF malware analysis — malicious · 78f6564d42951ec6

MALICIOUS

PDF

44.0 KB Created: 2020-08-20 02:53:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: aadaeeb6eecdd3e7ba784d8e7cb4bb1f SHA-1: 0af151922e5d2386d2a0eb50d8a22101b66896a3 SHA-256: 78f6564d42951ec6c3dab4dacfc155e148c133f292f0d42ae4e774af515a9ac1

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document was flagged as malicious due to a critical heuristic identifying a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the same redirector URL. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to distribute malicious content. The primary malicious IOC is the redirector URL.

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.cc/pify?keyword=sujet+brevet+2019+sciences+pdf
- http://files.modestlymade.com/uploads/1/3/1/8/131857631/394327.pdf
- http://jufusexab.elilanguagemagazines.com/uploads/1/3/1/0/131070767/nujadotoramul.pdf
- http://files.ipathinc.org/uploads/1/3/2/8/132814958/5473946.pdf
- https://cdn.shopify.com/s/files/1/0428/6434/5255/files/18843479409.pdf
- https://cdn.shopify.com/s/files/1/0429/6704/0154/files/4224220529.pdf
- https://cdn.shopify.com/s/files/1/0429/0406/0071/files/45287851365.pdf
- https://cdn.shopify.com/s/files/1/0432/0568/9504/files/mosivudaxesixeb.pdf
- https://cdn.shopify.com/s/files/1/0431/8271/9127/files/15494923984.pdf
- https://cdn.shopify.com/s/files/1/0440/6371/9574/files/docker_run_bash_in_container.pdf
- https://cdn.shopify.com/s/files/1/0432/8135/0820/files/calligrapher_s_bible.pdf
- https://cdn.shopify.com/s/files/1/0432/5359/6310/files/lotaxatifatal.pdf
- https://cdn.shopify.com/s/files/1/0434/3300/1126/files/casablanca_city_map.pdf
- https://cdn.shopify.com/s/files/1/0429/7618/2426/files/pinakekunuturipeli.pdf
- https://cdn.shopify.com/s/files/1/0434/6170/5888/files/wugesenizuxafumalezuvu.pdf
- https://cdn.shopify.com/s/files/1/0433/6749/7884/files/bavoruxanugojigusenaxasa.pdf
- https://cdn.shopify.com/s/files/1/0435/9825/0141/files/addicted_novel.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005ff9.bin` `8e9a7ffaaaf6a909af6c628dcac57fc710a9199cb04a57d755249ae514a964e0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5FF9	5768 bytes
`font_01_sfnt_off000073b5.bin` `02acf4165f554a3d166ea60747944224e969e304059b3add2db8d3afb6f18846`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x73B5	1956 bytes
`font_02_sfnt_off00007cd7.bin` `becacb1259fcb29048ae689fcce3df866c221f1fd27a01137efec1f62a8e661b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7CD7	11580 bytes

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