Malicious PDF — malware analysis report

Static analysis result for SHA-256 41599f77cad2156d…

MALICIOUS

PDF

44.9 KB Created: 2020-08-07 09:35:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b66f91a913ba7f0551d2f1d8e6a3d0c0 SHA-1: 93a33af45df2572804521978148f1ede2afb48b0 SHA-256: 41599f77cad2156dd307670d61ece49a65f6f3a4d29f817a7839453688e3b313
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF was flagged as malicious due to a critical heuristic identifying a link to a known malicious redirector at ttraff.com. Additionally, the PDF contains a large number of external links, many hosted on Shopify, which is characteristic of SEO link farms used to manipulate search results. The ML classifier also strongly indicated maliciousness. The embedded document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic.

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=vitamin+a+untuk+mata+pdf
    • http://files.everexpandinglife.com/uploads/1/3/1/3/131384567/c0e23b09e617.pdf
    • http://files.chaikalevar4greenertoronto.ca/uploads/1/3/1/1/131164009/0edeba.pdf
    • http://files.portstanleyartguild.com/uploads/1/3/1/0/131071035/ligufepebi.pdf
    • http://files.lansdownefarm.com.au/uploads/1/3/1/0/131070912/gasegaloferepafexez.pdf
    • https://cdn.shopify.com/s/files/1/0434/0894/9402/files/ronebugiwato.pdf
    • https://cdn.shopify.com/s/files/1/0434/8238/2502/files/57066786233.pdf
    • https://cdn.shopify.com/s/files/1/0430/8100/7255/files/functional_specification_document.pdf
    • https://cdn.shopify.com/s/files/1/0437/5547/1006/files/adjectives_words_list.pdf
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/37874797692.pdf
    • https://cdn.shopify.com/s/files/1/0437/0323/8811/files/wuruzorozizud.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3429/files/60848614759.pdf
    • https://cdn.shopify.com/s/files/1/0436/6172/1765/files/30324392446.pdf
    • https://cdn.shopify.com/s/files/1/0430/6577/0135/files/fagovupifuvabupod.pdf
    • https://cdn.shopify.com/s/files/1/0431/4434/7799/files/vugimudodepexilijatumepap.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.

FilenameKindSourceSize
font_00_sfnt_off00005ebb.bin
b9958b58a05a5fc9873554543d8f9560c0d63645d4b0f6a3b658238bb4d1522c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EBB 4564 bytes
font_01_sfnt_off00006e25.bin
eecfb50e326d3f10b6698e2762ed815bdf852c039fa542c9748d679b8c90bbc8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E25 13532 bytes
font_02_sfnt_off000098e8.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98E8 4324 bytes

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