Malicious PDF — malware analysis report

Static analysis result for SHA-256 419f668c14102da1…

MALICIOUS

PDF

40.0 KB Created: 2020-08-20 04:39:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b307c78b4538639dc7416abfdca93515 SHA-1: 5744fb0011e9285113732d3377698d162e7a1c19 SHA-256: 419f668c14102da19abca6a909a87441a23bde0d41c5e72c535529a60a658bcf
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a search result for 'soccer shirt mockup psd free'. This indicates a phishing or scam attempt. The PDF also hosts a large number of external links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic to distribute malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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=soccer+shirt+mockup+psd+free
    • http://files.elsahenderson.net/uploads/1/3/1/3/131384656/remexirajete_rugexaxuxifub_vababinonubeki.pdf
    • http://zepup.glutenfree-woman.com/uploads/1/3/0/7/130775958/6cf7bd.pdf
    • http://files.taprootsfamilyfarm.com/uploads/1/3/1/4/131412181/nokutovowozefu.pdf
    • http://files.helenpapworth.com/uploads/1/3/2/8/132815298/vupetekolopigixud.pdf
    • https://cdn.shopify.com/s/files/1/0429/2299/9964/files/betamethasone_davis_drug_guide.pdf
    • https://cdn.shopify.com/s/files/1/0427/9166/5830/files/25167562169.pdf
    • https://cdn.shopify.com/s/files/1/0437/9040/1685/files/22409527846.pdf
    • https://cdn.shopify.com/s/files/1/0432/8669/1998/files/33795293402.pdf
    • https://cdn.shopify.com/s/files/1/0437/4528/0161/files/vasudevan_biochemistry_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/0961/2712/files/wowurarosujisosivigadem.pdf
    • https://cdn.shopify.com/s/files/1/0441/0392/5912/files/68040972846.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sivuduveserekolagaxabulux.pdf
    • https://cdn.shopify.com/s/files/1/0435/3946/4341/files/94217341250.pdf
    • https://cdn.shopify.com/s/files/1/0433/0163/4213/files/hashmap_iterator_java.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_off00005f35.bin
1f4022be3b4f391e01ce994bc729ccf586a006caf4aa7b43ce8746f60bda1474		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F35 5320 bytes
font_01_sfnt_off0000711e.bin
b5307004c096bb3a290bf16caed3b09805655385db0d2d554abb9560c364ab2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x711E 10016 bytes

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