Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d376e9debb547b0…

MALICIOUS

PDF

38.4 KB Created: 2020-07-11 00:21:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70d6f80eb9ab505671c966f4f5dac80f SHA-1: 9df7c9c5d4fed343d6ed61207b32a80324d1d508 SHA-256: 3d376e9debb547b0dfc47745cd79c132c837375bc78fa3c71c4b049f3150fd60
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many of which point to a link farm designed to host further PDF documents. One of the embedded links, https://ttraff.cc/pify?keyword=ada+restroom+requirements+pdf, is identified as a malicious redirector. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for phishing or malware delivery. 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.cc/pify?keyword=ada+restroom+requirements+pdf
    • http://files.beechwoodhills.org/uploads/1/3/1/8/131871727/7480499.pdf
    • http://files.jerichostem.com/uploads/1/3/0/7/130775116/5cb492ad83f.pdf
    • http://files.tt-motorcycles.com/uploads/1/3/1/1/131164414/duvunovune.pdf
    • http://files.industri-motion.com/uploads/1/3/0/8/130874411/gakafuzobusos_xoduzojisivili_denodelim_vugorukorubaduz.pdf
    • http://files.chiropractorroyaloakmi.com/uploads/1/3/2/6/132682042/vowegurusakebel.pdf
    • http://files.novatogsdaycamp.org/uploads/1/3/0/7/130775186/wibotowi.pdf
    • http://files.highcountrycorals.com/uploads/1/3/0/7/130739780/edadb3e8e0.pdf
    • http://files.jaynestringer.com/uploads/1/3/2/7/132740694/sorule.pdf
    • http://files.adriaandewit.com/uploads/1/3/1/0/131071191/44708.pdf
    • http://files.nipomodrama.com/uploads/1/3/0/7/130739247/livajemowupovo.pdf
    • https://rixoselojata.files.wordpress.com/2020/07/61920524436.pdf
    • https://zuzilunox.files.wordpress.com/2020/06/5961806766.pdf
    • https://taletabito.files.wordpress.com/2020/06/dewotosojiwozowidebi.pdf
    • https://divezifek.files.wordpress.com/2020/07/77397732534.pdf
    • https://jubowut.files.wordpress.com/2020/07/73426893978.pdf
    • https://wakukozid.files.wordpress.com/2020/07/22129913017.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mejamuzeditika.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/11067845032.pdf
    • https://cdn.shopify.com/s/files/1/0432/1384/8731/files/vugijopigedabul.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37872338034.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61086590007.pdf
    • https://cdn.shopify.com/s/files/1/0431/9805/4558/files/momewegis.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_off000057c5.bin
2b348b10aadf80cf68a3aec0a4906008d905c4774f4e38e5215306fde3d53677
pdf-font-stream PDF embedded font (sfnt) at offset 0x57C5 5152 bytes
font_01_sfnt_off00006931.bin
a12c987700129c9ab812465e87f8e9244748518e84a31303c9f847586d1a801e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6931 9904 bytes