PDF malware analysis — malicious · 9d11a9f7e2f9e7a4

MALICIOUS

PDF

45.2 KB Created: 2020-08-13 11:26:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a99fbfd96a30220392dca6b2f26d724f SHA-1: 9fbd532c8048ed5dbf21c04e9c73276052510632 SHA-256: 9d11a9f7e2f9e7a434f387f4c94159cf65919ed0ba3b87c1997172588aea2ef9

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.cc/wb?keyword=facile%20facile%20a2pdf. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to a malicious site. The presence of many shopify.com links indicates a link farm strategy, likely to improve SEO for malicious content.

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/wb?keyword=facile%20facile%20a2pdf
- http://files.shadedlily.com/uploads/1/3/1/3/131380547/78a1bc80.pdf
- http://files.bcawworcester.com/uploads/1/3/2/6/132683357/970307.pdf
- http://nogune.lemoine.us/uploads/1/3/0/7/130776445/tosub.pdf
- https://cdn.shopify.com/s/files/1/0438/3680/1181/files/mufumosodo.pdf
- https://cdn.shopify.com/s/files/1/0435/2416/1695/files/vaccine_card.pdf
- https://cdn.shopify.com/s/files/1/0432/7473/1685/files/sezevusep.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9467339244.pdf
- https://cdn.shopify.com/s/files/1/0431/3251/8555/files/pizuremeduf.pdf
- https://cdn.shopify.com/s/files/1/0437/9269/5458/files/4309456573.pdf
- https://cdn.shopify.com/s/files/1/0429/2742/3654/files/xididoseje.pdf
- https://cdn.shopify.com/s/files/1/0435/8009/6667/files/66339804232.pdf
- https://cdn.shopify.com/s/files/1/0436/3668/7008/files/easy_english_sentences_for_beginners.pdf
- https://cdn.shopify.com/s/files/1/0431/7849/2062/files/agonist_and_antagonist_drugs.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vozazugimutiwobawaxuleg.pdf
- https://cdn.shopify.com/s/files/1/0440/5238/1846/files/21807484302.pdf
- https://cdn.shopify.com/s/files/1/0435/7872/0414/files/deferebimiluxofujiguzibi.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_off00005f65.bin` `b1dbca3b564ae6764b270f8ad643ff0fae9e8df457188b71441d0e3f08e0a90b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F65	4456 bytes
`font_01_sfnt_off00006e8e.bin` `84611034d72f735ec5ccea8039fe7575cda403ed8e9e2776b6d15c73487df2da`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6E8E	13580 bytes
`font_02_sfnt_off000099d1.bin` `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x99D1	4324 bytes

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