PDF malware analysis — malicious · 1c1bb498a7cad6fe

MALICIOUS

PDF

52.4 KB Created: 2020-08-05 16:41:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bb0953a3a4d162d4d4db3153769f852a SHA-1: 3150997d56f1f6d660fab35acadcc9a6cede1caa SHA-256: 1c1bb498a7cad6fe22a667426f1019a37d7a79ec2af6bc9f0d3ed8ac86ea5f46

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Index du liquide amniotique pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. The ML classifier strongly supports the malicious verdict. The primary attack pattern involves redirecting the user to malicious infrastructure via a deceptive PDF.

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=index+du+liquide+amniotique+pdf
- http://files.firsthomepurchases.biz/uploads/1/3/0/9/130969172/1071270.pdf
- http://files.janobykennels.com/uploads/1/3/0/8/130874361/06d3d8fc57.pdf
- http://files.davisfamilyatdeanpark.com/uploads/1/3/1/3/131383665/xegemifarotaworipo.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vabagibad.pdf
- https://cdn.shopify.com/s/files/1/0440/5886/9910/files/joparalidufirid.pdf
- https://cdn.shopify.com/s/files/1/0435/0600/8216/files/xurulupavurarime.pdf
- https://cdn.shopify.com/s/files/1/0437/9541/5189/files/tinkers_construct_tier_list.pdf
- https://cdn.shopify.com/s/files/1/0429/6248/5407/files/zupiziv.pdf
- https://cdn.shopify.com/s/files/1/0432/3583/6068/files/16403927310.pdf
- https://cdn.shopify.com/s/files/1/0427/6980/9564/files/38278105010.pdf
- https://cdn.shopify.com/s/files/1/0428/3249/4751/files/vufowufinagu.pdf
- https://cdn.shopify.com/s/files/1/0430/9372/1255/files/civil_engineering_drawing_books_free_download.pdf
- https://cdn.shopify.com/s/files/1/0431/3510/7233/files/booster_pump_calculation.pdf
- https://cdn.shopify.com/s/files/1/0437/6988/8920/files/42612285469.pdf
- https://cdn.shopify.com/s/files/1/0433/4705/0661/files/25994359848.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_off00006b40.bin` `2317f0a27efabea3a94600b088edd5f00bcaba98cd45d2346288270fad011a7e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6B40	5044 bytes
`font_01_sfnt_off00007c5d.bin` `1106f217a19a2219d224ce25da2b3bd2fa19f5bccf301f173920149583d7a6e6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7C5D	16224 bytes
`font_02_sfnt_off0000ad89.bin` `541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAD89	16204 bytes

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