PDF malware analysis — malicious · 37eef11e6e694a97

MALICIOUS

PDF

41.6 KB Created: 2020-08-20 13:08:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b8a9cc189e104742eac8009277308331 SHA-1: 99a49d88c66b28e6d16d99c61d609074368da377 SHA-256: 37eef11e6e694a97e1ec4a48b1d2b63bff882cccbc1a4071cbd126059bf9316f

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure via the URL https://ttraff.com/pify?keyword=audacity+mac++os+x. This suggests the document is designed as a link farm to obscure the ultimate malicious destination, likely for phishing or malware delivery.

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.com/pify?keyword=audacity+mac++os+x
- http://files.mattarelloaway.com/uploads/1/3/0/7/130739020/jexepavugeg_basejik_retetapi.pdf
- http://files.huimalamaokekai.org/uploads/1/3/1/4/131407691/jojotewomugunadumer.pdf
- http://pesil.jbkirklanddesign.com/uploads/1/3/0/7/130739693/1addb4a352be.pdf
- http://files.widhalmcustomhomes.com/uploads/1/3/1/3/131383934/8f19ef67.pdf
- https://cdn.shopify.com/s/files/1/0432/2908/5859/files/download_phn_mm_chuyn_t_sang_file_nh.pdf
- https://cdn.shopify.com/s/files/1/0428/1001/5910/files/fuwoxoxege.pdf
- https://cdn.shopify.com/s/files/1/0431/6105/9482/files/kuxobuzapiv.pdf
- https://cdn.shopify.com/s/files/1/0431/2760/3354/files/video_editor_fx_apk.pdf
- https://cdn.shopify.com/s/files/1/0431/8802/7555/files/75780116977.pdf
- https://cdn.shopify.com/s/files/1/0434/1438/8892/files/gijogupamurawume.pdf
- https://cdn.shopify.com/s/files/1/0452/8783/3762/files/polezopasuw.pdf
- https://cdn.shopify.com/s/files/1/0434/4145/5254/files/61614159127.pdf
- https://cdn.shopify.com/s/files/1/0437/8814/0696/files/esc_guidelines_pulmonary_embolism_2014.pdf
- https://cdn.shopify.com/s/files/1/0430/0200/3619/files/kebulazu.pdf
- https://cdn.shopify.com/s/files/1/0435/4539/5359/files/sipojamefux.pdf
- https://cdn.shopify.com/s/files/1/0432/3901/4562/files/dovevuvida.pdf
- https://cdn.shopify.com/s/files/1/0448/0575/0946/files/how_to_use_scanner_in_java.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.

Filename	Kind	Source	Size
`stream_005_off000076e0.bin` `8c2aa6613c0c7b23e5b9989b1475b9792ef92e7e3263762f481c8b22aed714fe`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x76E0	10084 bytes
`font_00_sfnt_off00006583.bin` `5d2b8d9c12cdf482802f473b4c700febf343d062a321ba26a2e48db661345948`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6583	5116 bytes

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