Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc353ce3b8d0e2c9…

MALICIOUS

PDF

42.9 KB Created: 2020-08-27 19:39:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02a8dd7e5a0394b8178d49765fde9862 SHA-1: 6953501db17568f14b717053e5b7e1f8874b528a SHA-256: bc353ce3b8d0e2c91c796d65798be6eaa342cc1746a6d94934f230650767062f
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged as malicious due to containing a large number of external links, many of which point to PDF files hosted on Shopify. One of the primary links redirects to a known malicious redirector infrastructure. The document body contains garbled text but includes the same redirector URL, suggesting an attempt to disguise the malicious intent.

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.ru/pify?keyword=historietas+cortas+para+imprimir+y+c
    • http://gexifapol.leetech-led.com/uploads/1/3/1/4/131482995/1147419.pdf
    • http://files.winscombedental.com/uploads/1/3/1/8/131856992/rilaveji.pdf
    • https://cdn.shopify.com/s/files/1/0436/8809/9993/files/vegan_bodybuilding_nutrition_guide.pdf
    • https://cdn.shopify.com/s/files/1/0439/4539/4331/files/lactobacillus_buchneri.pdf
    • https://cdn.shopify.com/s/files/1/0433/9790/6589/files/boveku.pdf
    • https://cdn.shopify.com/s/files/1/0428/9160/8227/files/41550872346.pdf
    • https://cdn.shopify.com/s/files/1/0434/2572/6614/files/xajeme.pdf
    • https://cdn.shopify.com/s/files/1/0444/2708/3943/files/69271292416.pdf
    • https://cdn.shopify.com/s/files/1/0437/0880/9384/files/92085082916.pdf
    • https://cdn.shopify.com/s/files/1/0437/2368/6056/files/jidasepuna.pdf
    • https://cdn.shopify.com/s/files/1/0447/4834/1399/files/para_que_sirve_la_gasometria_arterial.pdf
    • https://cdn.shopify.com/s/files/1/0436/0568/8483/files/vitesobikud.pdf
    • https://cdn.shopify.com/s/files/1/0429/5698/0377/files/13836855586.pdf
    • https://cdn.shopify.com/s/files/1/0430/2913/5514/files/4243025920.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.

FilenameKindSourceSize
font_00_sfnt_off00006771.bin
a61ba7a134c4bbb7a1278163b73dd3ced3114b3941830ae51c5b22cb8725d219		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6771 5108 bytes
font_01_sfnt_off000078bc.bin
0295823d94fdb4cd48865f02de8a42c2ad3a1206e3ff554dd2bc6661a8520910		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78BC 11200 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.