Malicious PDF — malware analysis report

Static analysis result for SHA-256 435c020353d02384…

MALICIOUS

PDF

56.7 KB Created: 2020-09-11 20:58:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bbb1c47267fe3e007c4d43493a57b881 SHA-1: 4ff77be1735070eb6a8deb9303067b59298813e2 SHA-256: 435c020353d023840b35c1512202d64d2eaeb9be7ce71e9842581e288fc995b5
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'premium ecommerce html5 template' and a URL that aligns with the malicious redirector. The presence of numerous PDF links suggests a link farm or redirection strategy. No scripts were extracted from this sample.

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.club/wix?keyword=premium+ecommerce+html5+template
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/mejebofowuwefaguzutopunu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5763/5743/files/tuvoworivoduwilerugunumiv.pdf
    • https://cdn.shopify.com/s/files/1/0439/1721/3851/files/gogum.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/5340165219.pdf
    • https://cdn.shopify.com/s/files/1/0431/7616/5536/files/62527841826.pdf
    • https://static.usrfiles.com/ugd/d01287_5554ab2d734f4bed9aea64c6567eecfa.pdf
    • https://static.usrfiles.com/ugd/9ff9b8_17df0b37834c45bdb3edc2f8a2f97845.pdf
    • https://cdn.shopify.com/s/files/1/0435/3222/2615/files/ikea_catalogue_uk.pdf
    • https://cdn.shopify.com/s/files/1/0437/7359/1701/files/bawibolefiwimowuxilubot.pdf
    • https://cdn.shopify.com/s/files/1/0430/8015/5290/files/ditiwadebepojabiligagov.pdf
    • https://cdn.shopify.com/s/files/1/0432/7650/1147/files/25028539876.pdf
    • https://cdn.shopify.com/s/files/1/0437/6343/3629/files/il_a_neig_dans_l_aube_rose.pdf
    • https://cdn.shopify.com/s/files/1/0437/3803/8423/files/25530047777.pdf
    • https://cdn.shopify.com/s/files/1/0435/3484/4059/files/77295996513.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_off0000a1b9.bin
c49406b935396af8903892d622b0b9966a55dbd3b334bdbb4aa0e90a18365034		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1B9 5120 bytes
font_01_sfnt_off0000b2fd.bin
503519d13258313b6bfbf4871215157d5f849dcf7165fbf8b239da62486bbf44		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB2FD 10416 bytes

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