Malicious PDF — malware analysis report

Static analysis result for SHA-256 2834b0cfa744579f…

MALICIOUS

PDF

41.1 KB Created: 2020-08-07 14:59:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ba348748bcd2f577b0c6dd478e49b6f SHA-1: fa8f3f1f81b819a7d953a381cfc020afffe645b1 SHA-256: 2834b0cfa744579f24189237399a1cb61530aa32eabf06c166eaa4a930175055
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm or SEO spam campaign. One critical heuristic firing identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=sap+bahaya+rokok+pdf'. The document body contains garbled text and metadata suggesting it was generated by wkhtmltopdf, likely to obscure the malicious links.

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=sap+bahaya+rokok+pdf
    • http://files.strategy3inspired.com/uploads/1/3/1/4/131483592/4081412.pdf
    • http://files.marzipan-media.com/uploads/1/3/1/8/131856184/7584706.pdf
    • http://files.huncreekservices.com/uploads/1/3/1/3/131384771/visubiwo.pdf
    • http://files.increaseministries.com/uploads/1/3/2/6/132682090/6743000.pdf
    • http://files.globaldancearts.org/uploads/1/3/1/4/131483592/08395fbd9e.pdf
    • https://cdn.shopify.com/s/files/1/0433/2670/1726/files/deckers_fishing_report.pdf
    • https://cdn.shopify.com/s/files/1/0431/2236/0481/files/rotigisabojizagema.pdf
    • https://cdn.shopify.com/s/files/1/0437/6877/4807/files/dowam.pdf
    • https://cdn.shopify.com/s/files/1/0435/7714/7547/files/59884512909.pdf
    • https://cdn.shopify.com/s/files/1/0432/5425/1670/files/bupujazorifuse.pdf
    • https://cdn.shopify.com/s/files/1/0432/3845/7501/files/gowavelozetado.pdf
    • https://cdn.shopify.com/s/files/1/0431/0496/0676/files/xofuledipubuzijisigobulot.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mevebetivegukubevam.pdf
    • https://cdn.shopify.com/s/files/1/0427/6341/9815/files/80848682149.pdf
    • https://cdn.shopify.com/s/files/1/0437/1791/8870/files/kamus_arab_indonesia_sehari_hari.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mowojemabedeju.pdf
    • https://cdn.shopify.com/s/files/1/0436/7125/7241/files/77353300292.pdf
    • https://cdn.shopify.com/s/files/1/0431/2730/8454/files/15652623277.pdf
    • https://cdn.shopify.com/s/files/1/0434/1979/5623/files/90194459224.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_off000058c1.bin
53f9aca11bd103c628fe773d6b55dfc92ef825086836ab8a11a62c7b1d66bd02
pdf-font-stream PDF embedded font (sfnt) at offset 0x58C1 4764 bytes
font_01_sfnt_off000068f0.bin
7b675580f38d600a69c21dfde56c6b7d754da318d6d2fec1ff2fcbbf6cb5a439
pdf-font-stream PDF embedded font (sfnt) at offset 0x68F0 9468 bytes
font_02_sfnt_off0000894d.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
pdf-font-stream PDF embedded font (sfnt) at offset 0x894D 4324 bytes