PDF malware analysis — malicious · 819876d47e9da031

MALICIOUS

PDF

41.7 KB Created: 2020-08-04 16:44:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ba4843ec85c6fb666393f8c9ccc07055 SHA-1: a65329fb462260f2de153f6d35bda14fbf02384a SHA-256: 819876d47e9da03118bc119402a67eb8ad096caa9ed642e1e70db38946f078df

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Phishing:Spearphishing Attachment T1204.002 Malicious Link:Malicious File

The PDF contains numerous embedded links, many of which point to external resources, indicating a link farm or redirection strategy. The primary redirector URL, https://ttraff.cc/wb?keyword=prehospital%20emergency%20care%20pdf%20download, is flagged as malicious. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains similar URLs, suggesting the file's purpose is to redirect users to malicious sites, potentially for phishing or malware distribution.

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=prehospital%20emergency%20care%20pdf%20download
- http://gapenelox.amourphotographychattanooga.com/uploads/1/3/1/4/131437402/basegisaworaf.pdf
- http://files.wishuponastaryorkies.com/uploads/1/3/1/3/131382330/sexete.pdf
- http://files.luxeavie.net/uploads/1/3/1/0/131069950/niboxidijaza.pdf
- http://files.stormtrooperblaster.com/uploads/1/3/1/4/131453060/37889856907.pdf
- http://files.pictureframingblackpool.com/uploads/1/3/1/4/131407494/2416551.pdf
- https://cdn.shopify.com/s/files/1/0430/0704/9887/files/chilton_manual_online_free.pdf
- https://cdn.shopify.com/s/files/1/0431/9405/6861/files/97597976919.pdf
- https://cdn.shopify.com/s/files/1/0431/9094/3901/files/matias_ergo_pro.pdf
- https://cdn.shopify.com/s/files/1/0434/4132/4184/files/palawerinodorelufonavat.pdf
- https://cdn.shopify.com/s/files/1/0430/5331/8298/files/anatomy_of_flowering_plants_neet_questions.pdf
- https://cdn.shopify.com/s/files/1/0429/9302/5183/files/73906003052.pdf
- https://cdn.shopify.com/s/files/1/0432/1896/0545/files/zegifad.pdf
- https://cdn.shopify.com/s/files/1/0429/0553/4620/files/webmail1_covadhosting_biz.pdf
- https://cdn.shopify.com/s/files/1/0431/7973/7237/files/44086993762.pdf
- https://cdn.shopify.com/s/files/1/0437/8220/9698/files/ziretobagefevexasidogab.pdf
- https://cdn.shopify.com/s/files/1/0430/5348/2138/files/79844537089.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
`font_00_sfnt_off00006246.bin` `aa95b437c546abad8547d18f097027015440cc716ba632c8871472be62a6c540`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6246	5764 bytes
`font_01_sfnt_off000075d1.bin` `23d358a015975adb5a5d44d16156a4dd364471e17ac636c999e59eeadefe6849`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x75D1	10620 bytes

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