Malicious PDF — malware analysis report

Static analysis result for SHA-256 2813e19fc059b566…

MALICIOUS

PDF

60.2 KB Created: 2020-07-22 14:12:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 575a6a5f0c0420edefa6d78882f473df SHA-1: 3605ac3d9bfda1e517a707460657ceb8bb768a54 SHA-256: 2813e19fc059b566d6ffabb85b47d706344947c002c4ba891cf34e89ef55c49a
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, which is disguised with a keyword related to medicinal uses of bamboo. This suggests a phishing or scam attempt to lure users to a malicious site. The PDF also contains a large number of external links, many hosted on Shopify, indicating a link farm strategy. No scripts were extracted from this sample.

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=bambusa+vulgaris+medicinal+uses+pdf
    • http://files.ccmooresville.com/uploads/1/3/1/3/131381819/tanupip.pdf
    • http://files.drjerryjacobson.com/uploads/1/3/1/4/131438509/fowureso_kajogabobo_fiturilovitapam.pdf
    • http://files.nmbathessentials.net/uploads/1/3/2/8/132815791/bibumikuraja-wazivorem-nubewagafadej-fotugepari.pdf
    • https://cdn.shopify.com/s/files/1/0428/2449/9367/files/44708048274.pdf
    • https://cdn.shopify.com/s/files/1/0433/0940/0214/files/norafutuzokusefex.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53262414385.pdf
    • https://cdn.shopify.com/s/files/1/0429/8076/9951/files/zamugipako.pdf
    • https://kugedabi.files.wordpress.com/2020/07/bowuzizejatewawusuvo.pdf
    • https://botojime.files.wordpress.com/2020/06/wugarasujinidejupatag.pdf
    • https://xegetiku.files.wordpress.com/2020/06/16715353209.pdf
    • https://vagiseni.files.wordpress.com/2020/06/gisabele.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/surorut.pdf
    • https://cdn.shopify.com/s/files/1/0433/8027/7406/files/metibo.pdf
    • https://cdn.shopify.com/s/files/1/0437/9131/9200/files/wipedojetuwu.pdf
    • https://cdn.shopify.com/s/files/1/0437/7654/0834/files/18732179156.pdf
    • https://cdn.shopify.com/s/files/1/0430/0744/3103/files/makesanifezowatetisivuwod.pdf
    • https://cdn.shopify.com/s/files/1/0431/7816/4387/files/24312654937.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/bodipelagunerusamivufa.pdf
    • https://cdn.shopify.com/s/files/1/0433/2421/1354/files/34671802516.pdf
    • https://cdn.shopify.com/s/files/1/0430/8012/2532/files/6647719651.pdf
    • https://cdn.shopify.com/s/files/1/0433/9341/7366/files/94551300956.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_off0000ad50.bin
0cd05e17df5b7b6bc14742c6fdc846b0739d2ecce1696bc0142b95399ad9a3ee
pdf-font-stream PDF embedded font (sfnt) at offset 0xAD50 5416 bytes
font_01_sfnt_off0000bf9f.bin
e501a28ba16f04b831b175b3705bfc201767d3a3d6589344b02bb898b48307fa
pdf-font-stream PDF embedded font (sfnt) at offset 0xBF9F 10348 bytes