Malicious PDF — malware analysis report

Static analysis result for SHA-256 a809036a1cd0b5fc…

MALICIOUS

PDF

45.5 KB Created: 2020-07-10 13:09:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ea8db3dcf969f02a7cf255390d6c2b9 SHA-1: 891fa1939a5916b9f78ac42f715a5d2fc5c77d9e SHA-256: a809036a1cd0b5fc4143185d47ef03054325fa829a551ba4b538db02eaf8c641
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, many of which point to external PDF files hosted on various domains. One critical heuristic identified a malicious redirector link to 'ttraff.com', suggesting a phishing or malware distribution attempt. The document body, while containing garbled text, also includes the same URLs, reinforcing the attack pattern. 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/wb?keyword=programma%20elettorale%20fratelli%20d
    • http://files.onceuponarockvermont.com/uploads/1/3/0/8/130874295/2411951.pdf
    • http://files.gbsupplyco.com/uploads/1/3/0/7/130739318/dinuzumapa_sixunufosaj_jizipujib.pdf
    • http://files.davidwagnermedia.com/uploads/1/3/0/8/130815124/2062cae536.pdf
    • http://files.therealitynews254.com/uploads/1/3/1/3/131398264/9109834.pdf
    • http://files.maidtoshineservices.net/uploads/1/3/1/4/131437268/29f33e.pdf
    • http://files.chicoanimalshelter.org/uploads/1/3/2/3/132303312/tuzobun.pdf
    • http://files.danielaneri.eu/uploads/1/3/1/4/131454770/6c59d.pdf
    • http://files.srtarchitect.com/uploads/1/3/2/6/132681296/7220946.pdf
    • http://files.myncpl.com/uploads/1/3/0/7/130739183/702181.pdf
    • http://files.principledrywall.com/uploads/1/3/2/7/132741194/lidozisizet_moseb_jabaxo_rewugufixaguraw.pdf
    • http://files.auntluluskitchen.com/uploads/1/3/1/3/131379951/7815297.pdf
    • https://zoruwebi.files.wordpress.com/2020/06/4161004945.pdf
    • https://juwurel.files.wordpress.com/2020/06/21196135369.pdf
    • https://vokalavejof.files.wordpress.com/2020/06/20170705285.pdf
    • https://vuketuwowi.files.wordpress.com/2020/07/19803966769.pdf
    • https://zexekiko.files.wordpress.com/2020/06/walaziserip.pdf
    • https://xosuvenivon.files.wordpress.com/2020/07/lipubumebepetotef.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xidegafizupewutuzu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13908697451.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nidosavexurirevinuno.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kikurum.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xedatojif.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/14192803693.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_off000072b5.bin
fcb82aad045e41539b5287a7399a146b82f7a96430de3d7aae00faa7126148fa
pdf-font-stream PDF embedded font (sfnt) at offset 0x72B5 4900 bytes
font_01_sfnt_off0000836a.bin
5ab8e330ab7f5e3e2391f5a89628ac8d83adb8375aade10d85b83414adaebc88
pdf-font-stream PDF embedded font (sfnt) at offset 0x836A 10988 bytes