Malicious PDF — malware analysis report

Static analysis result for SHA-256 b828481e32de32d4…

MALICIOUS

PDF

61.1 KB Created: 2020-08-15 04:50:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 074e9ae15511d296cbd4012f9dbe34b7 SHA-1: 7dd125be3af4704a575c434da9645eaa41a3a6e6 SHA-256: b828481e32de32d404ed66765d4db2452b954151fc0fac77265f737a2a50fe66
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link farm pointing to a malicious redirector. The primary malicious URL identified is https://ttraff.cc/wb?keyword=miguel%20de%20unamuno%20sis%20pdf. While many other links point to benign Shopify domains, the presence of the redirector suggests an attempt to obscure the ultimate malicious destination, likely 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=miguel%20de%20unamuno%20sis%20pdf
    • http://files.divinemercymusic.org/uploads/1/3/0/7/130738801/wiwewinupibapejapuni.pdf
    • http://files.theplaidtraveler.com/uploads/1/3/0/8/130874691/478608.pdf
    • http://punoz.ittybittydance.com/uploads/1/3/0/8/130873987/073475036c.pdf
    • http://files.mrgysbers.com/uploads/1/3/1/0/131070581/b6fd7046de93f.pdf
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/87650130353.pdf
    • https://cdn.shopify.com/s/files/1/0429/3358/4035/files/800-_490-_4388.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/26225030347.pdf
    • https://cdn.shopify.com/s/files/1/0432/8541/4056/files/katalog_ac_panasonic.pdf
    • https://cdn.shopify.com/s/files/1/0427/4218/6150/files/systematic_theology_wayne_grudem_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/9958/6714/files/befubexip.pdf
    • https://cdn.shopify.com/s/files/1/0431/0161/8330/files/scotts_reel_mower.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/21617342462.pdf
    • https://cdn.shopify.com/s/files/1/0447/5600/9111/files/30517335086.pdf
    • https://cdn.shopify.com/s/files/1/0430/9427/8293/files/fobifenusiwedavaliga.pdf
    • https://cdn.shopify.com/s/files/1/0431/0879/4530/files/pajatajujibemoxosomenali.pdf
    • https://cdn.shopify.com/s/files/1/0430/1560/2337/files/javopiberovo.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_off0000af40.bin
140310c956c1ff984130be8081e77993c503d93c2051ac147ee79287dbd38098		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF40 5272 bytes
font_01_sfnt_off0000c126.bin
fe43e66c119fd774b3884e7fc303eac00f08060a70f0d2c835b5e86019ff2d07		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC126 11880 bytes

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